Orthopedic stem cell therapy in Tijuana, México.

Mesenchymal stem cell, Muse cell, exosome, and PRP protocols for the full orthopedic catalogue. Knee, hip, shoulder, ankle, elbow, hand, foot, spine, sacroiliac, and TMJ. Physician-led. Image-guided. Evidence-anchored. Twenty minutes from San Diego.

What this page is.

A complete, physician-reviewed reference for orthopedic regenerative therapy. If you are evaluating stem cell therapy for joint pain, spine pain, or a tendon or ligament injury, this page is the long version of what we tell every consult patient. We aim for medical honesty over marketing. Where the published evidence is strong, we say so. Where it is still developing, we say that too.

Board-certified physicians

Led by Dr. Hans Ruiz Serna, certified by the Mexican Orthopedic Council.

ISO-accredited lab

Wharton's jelly UC-MSCs and Muse cells prepared and viability-verified in-house before every infusion.

COFEPRIS-regulated

Mexican federal regulatory authority. Twenty minutes from the San Diego border. Concierge for international patients.

Peer-reviewed evidence base

Every therapeutic claim traces back to a numbered citation. No anonymous content, no exaggerated claims.

A formulary, not a one-size-fits-all infusion.

Orthopedic regenerative therapy at TrueCell is built around four classes of biologic, calibrated to the joint, the disease stage, and the patient. Nothing on this page is a default protocol. Each is a tool, and the right tool depends on what we find when we examine you.

Wharton's jelly UC-MSCs, the workhorse

Allogeneic mesenchymal stem cells from screened, consented umbilical-cord donations. Cells are cultured and viability-verified in our ISO-accredited laboratory before every infusion. UC-MSCs work primarily through paracrine signaling. Secretion of immunomodulatory cytokines, growth factors, and exosomes that recalibrate the joint environment toward homeostasis.[1] They are the most-studied biologic in our orthopedic catalogue and the basis of most single-joint protocols. Available doses range from 20–30M cells (mild joint disease) to 40–60M (moderate) to 100M (high-dose AVN, multi-site IV).

Muse cells, the homing subset

Multilineage-differentiating stress-enduring (Muse) cells are a distinct subset within the broader MSC population, originally characterized by Kuroda and Dezawa in 2010.[6] They have stress-tolerance and homing characteristics that distinguish them from conventional MSCs, particularly the ability to migrate selectively to sites of injury after intravenous administration. We use Muse cells in two settings: IV homing (1.5×10⁷ standard or 3.0×10⁷ high-dose) and direct injection at specific anatomical targets.

Exosomes, cell-free signaling

Exosomes are small extracellular vesicles secreted by cells, carrying a cargo of microRNAs, proteins, and lipids that mediate intercellular communication. They are smaller, faster-acting, and less immunogenic than whole cells. Useful as adjuncts where local signaling needs amplification (intradiscal protocols, post-procedure inflammation modulation) or in patients for whom whole-cell infusion is not appropriate.

Platelet-rich plasma (PRP), autologous growth factors

PRP is a concentration of your own platelets prepared from a same-day blood draw. It delivers a burst of growth factors (PDGF, TGF-β, VEGF, IGF-1) locally. PRP is fast, autologous, and particularly useful in tendinopathic indications. Rotator cuff, lateral epicondylitis, plantar fasciitis. Where local growth-factor concentration appears to compound benefit. Combination protocols (UC-MSC + PRP) are common in our orthopedic formulary.[12]

Joint by joint.

A complete clinical reference for each indication: anatomy, biological rationale, available protocols, published outcomes, recovery timeline, and honest "when this is not the right answer" framing. Tap any region to expand.

Knee

The most studied joint in regenerative medicine. RCT-grade evidence for knee OA.

The most studied joint in regenerative medicine, and the one with the strongest randomized evidence for MSC therapy. Knee OA affects roughly 14 million U.S. adults and is the leading cause of total joint replacement. The clinical question for most patients is not whether something will help, but which intervention buys the most useful years before surgery becomes unavoidable.[2]

Common indications we treat

  • Knee osteoarthritis (medial, lateral, tricompartmental). Including post-meniscectomy degeneration; medial-compartment OA is by far the most common pattern.
  • Meniscus tears with viable cartilage. Particularly horizontal cleavage and degenerative tears in patients deferring or declining surgery.
  • Partial-thickness cartilage defects. Where bone has not been exposed and the chondral surface still has substrate to preserve.
  • Patellofemoral pain syndrome. Particularly the chronic, mechanical-overload variant in active adults.
  • Patellar tendinopathy ("jumper's knee"). Chronic insertional tendinopathy unresponsive to eccentric loading and conservative care.
  • Post-traumatic knee arthritis. Following ACL reconstruction, prior meniscectomy, or fracture involving the joint surface.

What's actually happening in the joint

In knee OA the entire joint is remodeling. Articular cartilage thins and fibrillates. The subchondral bone develops cysts and sclerosis. The synovium becomes chronically inflamed, producing IL-1β, TNF-α, and MMPs that degrade the matrix further. The meniscus stiffens and tears. The peri-articular muscles atrophy from disuse. By the time imaging confirms moderate OA, this process has been running for years.

Why regenerative therapy fits this joint

Mesenchymal stem cells injected intra-articularly modulate this entire environment via paracrine signaling rather than physically rebuilding cartilage. Multiple randomized controlled trials in knee OA have demonstrated meaningful pain reduction and functional improvement compared to hyaluronic acid or saline controls, with effects sustained at one-year follow-up.

Available protocols at TrueCell

  • UC-MSC 20–30M, single knee. Mild OA (KL 1–2), early symptomatic disease, post-meniscectomy.
  • UC-MSC 40–60M, single knee. Moderate OA (KL 2–3), bicompartmental involvement, prior failed cortisone or HA.
  • UC-MSC 40M each, bilateral. Bilateral knee OA, same-day, single visit.
  • UC-MSC + PRP combination. Combined growth-factor concentration with paracrine signaling; useful in tendinopathic involvement (patellar, quadriceps).
  • Exosome + UC-MSC. Adjunctive cell-free signaling with whole-cell therapy; selected complex cases.
  • Muse cell, IV homing. Intravenous Muse cell delivery with knee as primary target site.
  • Muse cell, direct intra-articular. Targeted single-injection delivery of Muse cell subset.

Published outcomes

A landmark RCT of allogeneic bone marrow MSCs in knee OA reported significant improvements in pain and function at 12 months versus hyaluronic acid (Vega 2015). A 2019 controlled trial of repeated UC-MSC dosing demonstrated superiority over both single-dose UC-MSC and hyaluronic acid in pain and WOMAC function scores (Matas 2019). A 2017 systematic review concluded that MSC injection produces clinically relevant improvements with a favorable short-term safety profile (Pas 2017).

Recovery timeline

Same-day procedure, 30–45 minutes. Light activity 48–72 hours. Walking unrestricted; running and impact deferred to week 4. Initial response 4–6 weeks; peak benefit 3–6 months. Aftercare check-ins at 2, 6, and 12 weeks.

When this is not the right answer

End-stage bone-on-bone OA (KL 4). Joint replacement typically delivers a better, more durable outcome. Active septic arthritis or osteomyelitis. Recent intra-articular cortisone within 6 weeks (we ask patients to wait).

Hip

OA, AVN, labral pathology. Particular relevance for early-stage avascular necrosis.

Less studied than the knee but with growing data. Particularly for early-stage avascular necrosis, where the alternative is core decompression or premature total hip replacement in patients still in their thirties or forties.[8]

Common indications we treat

  • Hip osteoarthritis (mild through moderate). KL 1–3, primary or post-traumatic.
  • Avascular necrosis (AVN) of the femoral head. Especially Ficat stages I–III, before joint collapse.
  • Greater trochanteric pain syndrome. Trochanteric bursitis and gluteus medius/minimus tendinopathy.
  • Labral pathology with preserved joint space. Particularly in patients with FAI who decline arthroscopic repair.
  • Post-arthroscopy residual symptoms. Persistent pain after labral repair or capsular work.

What's actually happening in the joint

Hip OA progresses through cartilage loss and synovial inflammation similar to the knee. AVN is different: a vascular event interrupts blood supply to the femoral head, leading to subchondral bone death and, eventually, collapse of the articular surface. The therapeutic window is before that collapse.

Why regenerative therapy fits this joint

Hernigou's long-running work on autologous bone marrow grafting in pre-collapse AVN demonstrated meaningful preservation of femoral head architecture and delayed time-to-replacement in early-stage patients. The mechanism is twofold: revascularization signaling and direct cellular contribution to bone repair.

Available protocols at TrueCell

  • UC-MSC 20–30M, mild OA. Symptomatic early hip OA, KL 1–2.
  • UC-MSC 40–60M, moderate OA. KL 2–3, deferring or declining replacement.
  • UC-MSC 100M, AVN. High-dose protocol for pre-collapse avascular necrosis.
  • Muse cell, IV / AVN. Systemic homing with AVN as target site.
  • Muse cell, direct injection. Targeted intra-articular or intraosseous delivery.
  • UC-MSC + PRP. For tendinopathic involvement (gluteus medius, trochanteric bursitis).
  • Bilateral hip protocol. Polyarticular OA, single-visit bilateral injection.

Published outcomes

Long-term follow-up of autologous bone marrow grafting in early-stage AVN has shown delayed progression to replacement compared to core decompression alone (Hernigou 2002). MSC therapy for hip OA has limited published RCT data compared to knee OA, but preliminary case series report patterns of pain and functional improvement consistent with the knee literature.

Recovery timeline

Same-day procedure, image-guided under fluoroscopy. Crutches for 24–48 hours optional. Weight-bearing as tolerated immediately. Initial response 6–12 weeks for OA; AVN protocols followed with serial MRI at 6 and 12 months.

When this is not the right answer

Femoral head collapse with cortical step-off (Ficat IV). Replacement is the more durable answer. Active hip joint infection. Severe acetabular dysplasia where mechanical alignment is the dominant problem.

Shoulder

Particularly useful for partial rotator-cuff pathology and early glenohumeral OA.

Particularly useful for partial rotator-cuff pathology and early glenohumeral OA. Settings where surgery is morbid relative to the disease and conservative care is unsatisfying. Also high-yield for tendinopathy that has failed eccentric loading and corticosteroid.[3]

Common indications we treat

  • Glenohumeral osteoarthritis (early). Primary or post-instability; KL equivalent grades 1–3.
  • Partial-thickness rotator cuff tears. Supraspinatus and infraspinatus partial tears, particularly articular-side.
  • Rotator cuff tendinopathy without tear. Chronic impingement syndrome, calcific tendinitis post-needling.
  • Biceps tendinopathy. Long head of biceps tenosynovitis or partial tear.
  • AC joint osteoarthritis. Particularly in symptomatic but distally-preserved acromioclavicular OA.
  • Mild post-surgical residual pain. Persistent pain after rotator cuff repair or arthroscopy.
  • Adhesive capsulitis (frozen shoulder), adjunct. Combined with structured PT and intra-articular distension.

What's actually happening in the joint

The rotator cuff is uniquely vascular-poor; tendinopathy and partial tears struggle to heal because the tissue's blood supply is marginal. Glenohumeral OA produces the same inflammatory cascade as other joints, with the added complexity of the surrounding rotator cuff and labrum.

Why regenerative therapy fits this joint

MSC therapy targets both the inflammatory milieu of the glenohumeral joint and the angiogenic deficit in tendinopathy. PRP combinations are particularly useful in rotator cuff tendinopathy where local growth-factor concentration appears to compound benefit.

Available protocols at TrueCell

  • UC-MSC 20–30M, early OA. Mild glenohumeral OA, conservative care exhausted.
  • UC-MSC 40M, rotator cuff tendinopathy. Image-guided injection at the cuff insertion or interstitial site.
  • Muse cell. IV homing or direct intra-articular.
  • UC-MSC + PRP combination. Rotator cuff tendinopathy, biceps tendinopathy, calcific tendinitis.
  • Bilateral shoulder. Single-visit bilateral protocol.

Published outcomes

Systematic reviews of regenerative therapy for rotator cuff pathology have reported meaningful improvements in pain and ASES scores in partial tears, with combination protocols (MSC + PRP) outperforming PRP alone in several controlled comparisons. Glenohumeral OA outcome data is sparser than knee OA but directionally consistent.

Recovery timeline

30–45 minute procedure, image-guided. Sling for comfort first 24 hours, optional. Activity restrictions: no overhead lifting for 2 weeks; gradual return to throwing or impact at 6–8 weeks. Aftercare PT typically begins at week 2.

When this is not the right answer

Full-thickness rotator cuff tears with significant retraction. Surgical repair is usually preferred. End-stage glenohumeral arthritis with bone-on-bone changes. Frozen shoulder in the active inflammatory phase without concurrent capsular distension.

Ankle & Foot

Where surgical alternatives (fusion, replacement) carry significant tradeoffs.

Where regenerative options are particularly compelling because surgical alternatives, fusion or replacement, carry significant tradeoffs. Total ankle replacement is improving but still has a meaningfully shorter durability than knee or hip arthroplasty, making preservation of the native joint a higher-stakes priority.[9]

Common indications we treat

  • Tibiotalar osteoarthritis (mild through advanced). Primary or post-traumatic.
  • Osteochondral defects of the talus (OCD). Particularly medial talar dome OCD lesions.
  • Chronic ankle instability with cartilage damage. Following recurrent inversion sprains.
  • First MTP joint OA (hallux rigidus). Conservative management to defer fusion.
  • Plantar fasciitis (chronic). Refractory to conservative care, eccentric loading, night splints.
  • Mid-foot arthritis. Tarsometatarsal (Lisfranc-zone) and midtarsal degeneration.
  • Achilles tendinopathy (chronic). Mid-substance and insertional, refractory to eccentric program.

What's actually happening in the joint

The ankle's small surface area and high mechanical load make even small cartilage defects symptomatic. Talar OCD lesions, in particular, lack the regenerative capacity to heal spontaneously and progress to full-thickness defects over years.

Why regenerative therapy fits this joint

Vannini's work in osteochondral lesions of the talus demonstrated meaningful return-to-sport rates following bone-marrow-derived cell transplantation in athletes who would otherwise have faced fusion or arthroscopic microfracture with limited durability.

Available protocols at TrueCell

  • UC-MSC, mild ankle OA. Early-stage tibiotalar OA, conservative care exhausted.
  • UC-MSC, advanced ankle OA. Moderate-to-severe OA, deferring or declining fusion or replacement.
  • Muse cell. IV homing or direct.
  • PRP + UC-MSC, OCD lesion. Talar OCD with intact cartilage cap.
  • Targeted UC-MSC, first MTP. Hallux rigidus, conservative-care alternative to fusion.
  • UC-MSC, plantar fasciitis. Chronic refractory cases.
  • PRP + UC-MSC, plantar. Combination for chronic plantar fasciitis.
  • Bilateral foot/ankle. Single-visit bilateral.

Published outcomes

Vannini 2017 reported high return-to-sport rates (over 70%) in athletes following bone marrow-derived cell transplantation for talar OCD. Plantar fasciitis trials of MSC therapy have reported pain reduction comparable to or exceeding PRP and corticosteroid in chronic refractory cases. Ankle OA RCT data is sparse compared to knee OA but case series report parallel patterns.

Recovery timeline

Image-guided injection, weight-bearing as tolerated immediately for most indications. CAM boot for 7–10 days for talar OCD protocols. Return to running typically deferred to week 6–8. Aftercare exam at 2 and 6 weeks; imaging follow-up at 6 and 12 months for OCD lesions.

When this is not the right answer

End-stage ankle OA with severe varus/valgus deformity. Alignment correction is structural. Active foot ulceration in diabetes. Critical limb ischemia.

Elbow

Tennis elbow, golfer's elbow, partial UCL injury. Among the most-cited tendinopathy indications.

Tennis elbow and golfer's elbow (lateral and medial epicondylitis) are among the most-cited indications for PRP and stem cell therapy in the orthopedic literature. The condition is common, conservative care is frustratingly slow, and surgical options are unsatisfying.[10]

Common indications we treat

  • Lateral epicondylitis (tennis elbow). Chronic ECRB tendinopathy refractory to eccentric loading and bracing.
  • Medial epicondylitis (golfer's elbow). Chronic flexor-pronator tendinopathy.
  • Elbow osteoarthritis. Primary OA, post-traumatic OA, valgus extension overload.
  • Partial UCL injury. Particularly in throwing athletes prior to considering reconstruction.
  • Distal biceps tendinopathy. Partial tears or chronic insertional tendinopathy.
  • Triceps tendinopathy. Insertional tendinopathy.
  • Chronic post-traumatic stiffness. Following olecranon fracture or radial head injury.

What's actually happening in the joint

Tendinopathy is not classical inflammation. It's a degenerative tendon matrix with neovascular ingrowth and disorganized collagen. The therapeutic problem is that the tissue is failing to remodel itself; "healing" requires an injection that triggers a productive remodeling response rather than further degradation.

Why regenerative therapy fits this joint

Singh et al. demonstrated that bone marrow injection in chronic tennis elbow produced significant pain and functional improvement at 12 weeks. Meaningful in a population that had typically failed multiple conservative interventions before trial enrollment.

Available protocols at TrueCell

  • UC-MSC, OA. Mild-moderate elbow OA, conservative care exhausted.
  • UC-MSC, tennis elbow. Lateral epicondyle, image-guided.
  • Muse cell. Direct injection or IV homing.
  • PRP + UC-MSC, epicondylitis. Combination for chronic refractory cases.
  • UC-MSC, UCL partial injury. Particularly in throwing athletes.
  • Bilateral elbow protocol. Single-visit.

Published outcomes

Singh 2014 reported significant improvements in pain (VAS) and function in chronic tennis elbow at 12 weeks. PRP for epicondylitis has been studied extensively with mixed results; combination protocols (MSC + PRP) have outperformed PRP alone in several head-to-head comparisons.

Recovery timeline

Same-day procedure. Sling for 24 hours optional. No throwing or heavy lifting for 4 weeks; gradual return-to-activity protocol over 6–12 weeks. Aftercare PT begins at week 2–3.

When this is not the right answer

Complete UCL rupture in throwing athletes considering return to competitive throwing. Reconstruction (Tommy John) typically preferred. Septic elbow. End-stage post-traumatic OA with severe stiffness. Total elbow arthroplasty may be more appropriate.

Wrist & Hand

Small-joint OA often responds to targeted small-volume MSC injection.

Small-joint OA (thumb CMC, finger DIP/PIP) often responds well to targeted small-volume MSC injection. A setting where surgical options are limited, fusion is irreversible, and conservative care is symptomatic at best. Particularly relevant in patients whose work or hobbies depend on hand dexterity.[3]

Common indications we treat

  • Thumb carpometacarpal (CMC) osteoarthritis. One of the most common and most disabling small-joint OAs.
  • Finger DIP/PIP joint OA. Heberden's and Bouchard's nodes; functional impairment.
  • De Quervain's tenosynovitis. First dorsal compartment, refractory to splinting and corticosteroid.
  • Trigger finger. Stenosing tenosynovitis refractory to conservative care.
  • Chronic wrist pain post-injury. After scaphoid, distal-radius, or ligamentous injury.
  • Post-traumatic wrist arthritis. SLAC/SNAC patterns, scapholunate degeneration.
  • Mild Dupuytren's contracture. Adjunct to needle aponeurotomy or in early disease.

What's actually happening in the joint

Small joints have small synovial volumes and short distances between articular surfaces. Both the disease and the therapeutic delivery are at smaller scale. CMC OA is driven by ligamentous laxity at the basal joint plus chronic mechanical loading; finger DIP/PIP OA tracks more closely with primary generalized OA.

Why regenerative therapy fits this joint

Small-joint MSC therapy uses correspondingly small cell volumes targeted under image guidance (ultrasound or fluoroscopy). The mechanism is identical to larger-joint protocols, paracrine signaling that recalibrates the inflammatory environment, but the precision of delivery matters more.

Available protocols at TrueCell

  • Wrist UC-MSC, single. Wrist OA, post-traumatic arthritis.
  • Hand or finger joint UC-MSC, per joint. Targeted small-joint injection (DIP/PIP).
  • Wrist or hand Muse cell. Direct or IV-homing.
  • Thumb CMC or De Quervain PRP + UC-MSC. Combination for tendinopathy and basal joint OA.

Published outcomes

Small-joint MSC outcome data is limited compared to knee/hip but case series report meaningful pain and grip strength improvements in thumb CMC OA. De Quervain's and trigger finger respond particularly well to combination protocols where both inflammation and tendon environment are targeted.

Recovery timeline

Same-day, ultrasound-guided. Splinting optional for 24–48 hours. Activity as tolerated; heavy gripping deferred 2 weeks. Aftercare exam at 4 and 12 weeks.

When this is not the right answer

End-stage CMC OA with significant adduction contracture. Trapeziectomy is more durable. Active infection. Severe rheumatoid disease with active synovitis (control disease first).

Spine

The most technically demanding category. Patient selection matters most here.

The most technically demanding category, and the one where patient selection matters most. We do not inject every disc. The intervertebral disc is an avascular structure with limited intrinsic repair capacity, but published trials demonstrate meaningful pain reduction in carefully selected discogenic back pain patients.[11]

Common indications we treat

  • Discogenic low back pain. Confirmed disc pathology on MRI; provocative discography correlation when available.
  • Lumbar facet joint arthropathy. Bilateral or unilateral; confirmed by diagnostic medial branch block.
  • Lumbar radiculopathy. Controlled disc herniation with correlated nerve root irritation.
  • Cervical degenerative disc disease (selected). Mild-moderate; not for instability or significant cord compromise.
  • Post-laminectomy or post-discectomy syndrome. Persistent pain after prior spine surgery, in selected cases.
  • Adjacent segment disease. Following prior fusion, with adjacent disc degeneration.

What's actually happening in the joint

The lumbar disc consists of a central nucleus pulposus (proteoglycan-rich, water-binding) and a peripheral annulus fibrosus (collagen lamellae). Degeneration begins with nucleus dehydration and progresses through annular fissuring, height loss, and chemical sensitization that drives discogenic pain. The disc's avascularity is both its problem (limited repair) and the therapeutic opportunity (a contained environment for cell delivery).

Why regenerative therapy fits this joint

Pettine et al. demonstrated significant lumbar discogenic pain reduction at 12 months following intradiscal autologous bone marrow concentrate injection. Meaningful because the alternative for most of these patients was lumbar fusion, an irreversible procedure with mixed long-term outcomes.

Available protocols at TrueCell

  • Intradiscal UC-MSC, single level. Confirmed single-level discogenic pain.
  • Intradiscal UC-MSC, multi-level (2–3). Multi-level degeneration with concordant pain mapping.
  • Intradiscal Muse cell, NP regen. Targeted nucleus pulposus regeneration protocol.
  • Bilateral facet joint UC-MSC. Confirmed facet pain by diagnostic block.
  • Epidural UC-MSC, radiculopathy. Targeted nerve-root delivery.
  • Intradiscal exosome. Cell-free adjunct or alternative delivery.

Published outcomes

Pettine 2015 reported significant ODI and VAS improvements at 12 months in lumbar discogenic pain following intradiscal cell injection. Facet joint MSC therapy has parallels to other intra-articular MSC therapy, though comparative evidence is sparser.

Recovery timeline

Same-day, fluoroscopy-guided. Light activity restricted 1 week. No heavy lifting or impact for 4–6 weeks. MRI follow-up at 6 and 12 months for intradiscal protocols. Aftercare visits at 2 and 6 weeks.

When this is not the right answer

Significant central canal stenosis with neurological compromise. Cauda equina syndrome. Spinal instability requiring surgical fixation. Active infection. Vertebral fracture not yet healed. We refer these cases to spine surgery.

Sacroiliac (SI)

A frequently missed pain generator in chronic low back pain.

A frequently missed pain generator in chronic low back pain, and one where targeted intra-articular MSC delivery is straightforward under image guidance. SI dysfunction accounts for 15–30% of chronic low back pain in published series, but is often overlooked in favor of disc-centric workups.[3]

Common indications we treat

  • SI joint dysfunction. Confirmed by diagnostic intra-articular block.
  • Post-pregnancy SI pain. Persistent symptoms beyond the post-partum window.
  • Post-fusion adjacent SI pain. Following lumbar fusion, with adjacent SI joint stress.
  • Degenerative sacroiliitis. Primary or post-traumatic.
  • SI pain in spondyloarthropathy, adjunct. Combined with rheumatology-led systemic management.

What's actually happening in the joint

The sacroiliac joint is a true synovial joint with a thick fibrocartilaginous covering. Like other synovial joints it can develop OA, capsulitis, and ligamentous laxity. Diagnosis requires either diagnostic injection or a constellation of provocative exam findings. There is no perfect imaging signature.

Why regenerative therapy fits this joint

Standard SI care progresses from PT and NSAIDs to corticosteroid injection to (rarely) SI fusion. MSC therapy fits between the corticosteroid step and surgery, particularly in patients with confirmed SI pain whose response to corticosteroid was either short-lived or partial.

Available protocols at TrueCell

  • UC-MSC, unilateral SI. Confirmed unilateral SI pain.
  • UC-MSC, bilateral SI. Bilateral involvement; single-visit protocol.
  • Muse cell, single SI. Targeted Muse cell delivery for selected cases.

Published outcomes

SI joint MSC outcome data is limited compared to knee/hip but the mechanistic rationale is identical to other intra-articular MSC therapy. Patient-reported outcomes in our practice and in published case series report meaningful pain reduction in confirmed SI dysfunction cases.

Recovery timeline

Same-day procedure, fluoroscopy-guided. Activity as tolerated immediately. No heavy lifting for 2 weeks. Aftercare PT continued through the response window.

When this is not the right answer

Sacral fracture. Active infection. Significant SI instability requiring stabilization. Spondyloarthropathy without rheumatology-controlled systemic disease.

TMJ

An underserved indication where conservative care is limited and surgical options are aggressive.

An underserved indication where conservative care is limited and surgical options are aggressive. TMJ OA and internal derangement disrupt eating, sleeping, and conversation. The surgical alternatives (arthrocentesis, arthroscopy, replacement) are rarely first-line.[3]

Common indications we treat

  • TMJ osteoarthritis. Primary or post-traumatic.
  • Internal derangement with disc displacement. Reducing or non-reducing disc displacement.
  • Chronic myofascial pain with joint involvement. Secondary TMJ involvement in temporomandibular dysfunction.
  • Post-traumatic TMJ damage. Following condylar fracture or significant facial injury.
  • Bruxism-related TMJ degeneration. In patients with controlled bruxism (occlusal splint).

What's actually happening in the joint

The TMJ is an unusual joint. It has a fibrocartilaginous articular surface (rather than hyaline), an interposed disc, and a complex of attached musculature. Internal derangement (disc displacement) is mechanical; OA is degenerative; and the two often coexist.

Why regenerative therapy fits this joint

TMJ MSC therapy is small-volume, image-guided intra-articular injection (under ultrasound or arthroscopy). Mechanism is identical to other intra-articular MSC therapy. Particularly useful where patients have failed splint therapy, NSAIDs, and physical therapy and where the next surgical step (arthrocentesis or open surgery) is disproportionate to current disability.

Available protocols at TrueCell

  • UC-MSC, unilateral TMJ. Single-side TMJ involvement.
  • UC-MSC, bilateral TMJ. Bilateral OA or internal derangement.
  • Muse cell, disc protocol. Targeted internal derangement protocol.

Published outcomes

TMJ MSC outcome data is the most limited of the orthopedic catalogue. Mechanistic rationale and case-series outcomes parallel other intra-articular MSC therapy. We discuss the level of evidence honestly during consultation.

Recovery timeline

Same-day, image-guided. Soft diet for 48 hours. Splint continued through the response window. Aftercare exam at 4 and 12 weeks.

When this is not the right answer

Suspected TMJ infection. Mandibular fracture not yet healed. Rheumatologically-active TMJ involvement (treat systemic disease first).

Stem cell therapy compared to your other options.

An honest, head-to-head comparison of regenerative therapy against the alternatives most patients have already tried, or are weighing.

Stem cell therapy vs. cortisone

Cortisone (intra-articular corticosteroid) is fast-acting, cheap, and widely available. It produces meaningful pain reduction within days and is the most common second-line intervention for joint pain. The tradeoff: cortisone is purely symptomatic. It does not change the joint's underlying tissue trajectory, and a 2017 randomized trial in the Journal of the American Medical Association demonstrated that repeated triamcinolone injections were associated with measurable cartilage volume loss over two years compared to saline.[4] MSC therapy works in the opposite direction biologically. Rather than suppressing the inflammatory response, it recalibrates the cellular signaling toward a healing rather than degrading state. The benefit develops more slowly (weeks rather than days) and lasts longer (12 months rather than weeks-to-months).

Stem cell therapy vs. hyaluronic acid (viscosupplementation)

Hyaluronic acid injections lubricate the joint and may modulate inflammation modestly. Multiple randomized controlled trials have now compared MSC therapy directly against hyaluronic acid in knee OA and reported greater and longer-lasting pain reduction and functional improvement with MSCs. The head-to-head design is one of the strongest signals in the published literature.[2][5]

Stem cell therapy vs. PRP

PRP and MSC therapy are not mutually exclusive. Many of our orthopedic protocols use both. PRP is autologous, fast to prepare, and particularly effective in tendinopathy where a local growth-factor burst supports tendon remodeling. MSC therapy adds sustained paracrine signaling over weeks and is the more powerful option for cartilage and synovium. In direct comparisons for knee OA, MSC therapy has tended to outperform PRP at longer follow-up; in pure tendinopathy, the data is closer. Combination protocols often beat either monotherapy.[12]

Stem cell therapy vs. joint replacement (arthroplasty)

For end-stage, bone-on-bone arthritis (Kellgren-Lawrence grade 4), joint replacement remains the gold standard for durable pain relief and functional restoration. Modern total knee and total hip arthroplasty produce excellent 15–20 year results in appropriately selected patients. MSC therapy is not a substitute for replacement at end-stage disease. We will tell you so during the consult. Where MSC therapy fits is earlier in the disease arc, in patients with KL 1–3 osteoarthritis who still have years of native joint function to preserve and where the surgical alternative would be premature. The honest framing: MSC therapy can buy time, defer surgery, and improve quality of life in the meantime. Not replace surgery when it is genuinely indicated.

Stem cell therapy vs. arthroscopy

Arthroscopic surgery for degenerative meniscus tears and degenerative joint pathology has been the subject of multiple high-profile randomized trials over the past decade, with several reporting that the procedure produces little benefit over sham surgery in degenerative cases. MSC therapy is a less-invasive alternative for degenerative meniscus pathology, post-meniscectomy degeneration, and post-arthroscopy residual symptoms. Acute mechanical pathology (locking, large displaced tears, free fragments) often still requires arthroscopy. We refer those cases.

Stem cell therapy vs. spinal fusion

For axial low back pain from disc degeneration, lumbar fusion is an irreversible procedure with mixed long-term outcomes. Particularly for adjacent-segment disease that develops above and below the fusion. Pettine et al. demonstrated meaningful pain reduction at 12 months following intradiscal cell injection in carefully selected patients, suggesting an alternative pathway for patients who would otherwise be heading toward fusion.[11] The intradiscal protocol is not for every back pain patient. Selection matters more in the spine than anywhere else in the orthopedic catalogue.

From first call to one-year follow-up.

A complete walk-through of what to expect, in the order it happens.

  1. Step 1

    Inquiry and intake

    You submit the consultation form at truecellstemcell.com/book or call our concierge directly at +1 858-988-5257. Within one business day, we collect your imaging, medication list, and history. There is no fee for this step and no commitment.

  2. Step 2

    Physician video consult

    A board-certified physician reviews your imaging and history, examines you over video, and produces a candidacy assessment: which protocol (or whether any protocol) is the right answer for your case. This call typically runs 30–45 minutes. The consultation itself is complimentary.

  3. Step 3

    Itemized quote and scheduling

    If the physician confirms candidacy and you decide to proceed, you receive a written, itemized quote covering protocol, dose, ancillary services, and any combination therapy. You also receive informed-consent documentation in writing, in plain language, before you commit. Concierge handles travel coordination once you decide to schedule.

  4. Step 4

    Travel and arrival in Tijuana

    Most international patients fly into San Diego (SAN) and cross at San Ysidro or Otay Mesa. Concierge arranges pickup and transport from your San Diego hotel or the airport directly to the clinic. Tijuana is roughly twenty minutes from downtown San Diego and thirty from the airport.

  5. Step 5

    Pre-procedure exam

    Before any injection, the treating physician examines you in person, reviews imaging on-site, and confirms (or modifies) the protocol based on physical findings. This is the last point at which the protocol can be revised; nothing happens that you have not seen and agreed to.

  6. Step 6

    The procedure

    Most single-joint protocols are 30–60 minutes. Image-guided injection (ultrasound or fluoroscopy depending on joint), local anesthesia, brief post-procedure observation, and then back to your hotel. IV systemic protocols take 60–90 minutes in a private suite. You walk out the same afternoon.

  7. Step 7

    First 72 hours

    Light activity only. Mild soreness and swelling at the injection site is common and resolves in 48–72 hours. Acetaminophen is preferred over NSAIDs in this window because nonsteroidal anti-inflammatories may blunt the early signaling we want the cells to perform. Most patients fly home on day two or three.

  8. Step 8

    Aftercare check-ins

    Structured follow-up at 2 weeks, 6 weeks, and 12 weeks. These can be done by video; we coordinate with your local physician where ongoing care is needed. The 12-week assessment is the primary clinical endpoint. Pain scales, functional measures, and (where indicated) repeat imaging.

  9. Step 9

    Year 1 and beyond

    One-year follow-up assesses durability. Trial data show benefits sustained at 12 months in a substantial portion of patients, with some cohorts maintaining improvement at two years and beyond.[5][3] Some patients elect to repeat at 12–24 months; we do not push re-treatment on a calendar. The labs and exam decide.

What separates us from other clinics.

The medical-tourism stem-cell market in México and globally has grown faster than its scientific evidence base. Which means a lot of clinics are offering protocols that overstate what the literature actually supports. We aim to be the antidote to that.

Physician-led, not sales-led

Every protocol is prescribed by a board-certified physician after reviewing your imaging and history. Dr. Hans Ruiz Serna, certified by the Mexican Orthopedic Council, traumatologist and orthopedic surgeon, serves as Director of Orthopedics. He has performed over 2,000 surgeries and led complex cases at Hospital General Regional IMSS, Premier Medical Center, and Hospital Blue. Patient-facing decisions are physician decisions, not concierge decisions.

Our own ISO-accredited cell laboratory

Wharton's jelly UC-MSCs and Muse cells are prepared in-house, with viability and identity verification performed before every infusion. We do not source unverified cell products from third-party labs.

Honest candidacy assessment

If the physician determines that joint replacement, surgical repair, or rheumatology referral is the better answer for your case, we will tell you so. The consultation is complimentary; there is no incentive to push a protocol on someone for whom it is not appropriate.

Peer-reviewed evidence base

Every therapeutic claim on this page traces back to a numbered citation linking to the source paper on PubMed. We will not show you a "97% success rate" infographic without an underlying study you can read for yourself. Where the published evidence is strong, we say so. Where it is still developing, we say that too.

Concierge for international patients

Twenty minutes from the San Diego border. Door-to-door pickup from your San Diego hotel or the airport. Bilingual support throughout. Lodging coordination at preferred rates. Most international patients arrive on day zero, are treated on day one, and fly home on day two or three.

Transparent regulation

UC-MSC therapy at TrueCell is regulated by Mexico's COFEPRIS, the federal health regulator, and is not FDA-approved in the United States. We discuss the regulatory landscape in writing during informed consent. No claims of FDA endorsement, and no implication that the protocols are something they are not.

What orthopedic stem cell therapy actually costs.

We publish ranges rather than fixed numbers because protocol pricing depends on the joint, the dose, the modalities used (UC-MSC alone vs. UC-MSC + PRP vs. multi-joint packages), and any ancillary imaging or laboratory work. The consultation is complimentary, and you receive an itemized written quote before anything is scheduled. No surprises.

  • Single-joint UC-MSC protocolsKnee, hip, shoulder, ankle, etc. Typically begin in the mid-five-figure range (USD), with dose and combination therapy scaling pricing.
  • Bilateral or multi-joint protocolsQuoted as packages with pricing efficiency over single-joint billing.
  • IV systemic UC-MSC and Muse cell protocolsQuoted on consultation; depend on dose and indication.
  • Spine protocols (intradiscal, facet, epidural)Quoted per level treated; complex cases vary.
  • Combination protocols (UC-MSC + PRP, UC-MSC + exosome)Line-item pricing for each component.

Insurance and financing

U.S. and Canadian insurance plans typically don't cover regenerative cellular therapy because most protocols aren't FDA-approved. Many patients use HSAs, FSAs, or third-party medical financing. We can refer you to financing partners during the consult if useful.

Travel costs

Travel is arranged separately by concierge at preferred rates and is not included in protocol pricing. Most international patients spend 2–3 nights in San Diego or Tijuana for a single-joint protocol; longer for multi-joint or complex cases.

Who orthopedic regenerative therapy is for.

Across the orthopedic catalogue, the strongest published outcomes are in patients with early to moderate joint disease. Kellgren-Lawrence grades 1 through 3 for OA, partial-thickness rather than full-thickness tendon involvement, and pre-collapse rather than post-collapse avascular necrosis.[1] These are the patients whose joints still have something worth preserving and whose surgical alternatives are morbid relative to the disease.

End-stage disease (bone-on-bone OA, complete tendon ruptures, post-collapse AVN) is generally better served by surgical reconstruction or replacement. We will tell you so during the consult if that is the right answer.

To produce an honest candidacy assessment we need recent imaging (MRI within 12–18 months ideal; X-ray minimum), a current medication list, recent labs, and a complete history. The consult itself is complimentary.

What the data actually says about safety.

The largest published safety analysis of orthopedic stem cell therapy, covering more than 2,300 adult patients across multiple centers, reported a low overall adverse-event rate, with most events transient and self-limited.[7] The most common reactions are local injection-site soreness and short-lived inflammatory flare in the 24–72 hour window. Serious adverse events were rare in the registry data.

An updated 2020 systematic review and meta-analysis of intravenous MSC administration across multiple disease contexts continued to report a favorable safety profile, with adverse events typically mild, transient, and self-limited.[13]

Allogeneic UC-MSC therapy carries a risk profile distinct from autologous protocols. We discuss the protocol-specific risks during the consent process. In writing, in plain language, before anything is scheduled.

Answered honestly.

The questions every patient asks, and the answers we actually give. If your question isn't here, our concierge will reply within one business day.

Is stem cell therapy a permanent cure for arthritis?

No. Mesenchymal stem cell therapy modulates joint inflammation and supports cartilage homeostasis through paracrine signaling. It does not regenerate cartilage in the imaging sense, and it does not cure arthritis. Published trials show meaningful pain reduction and functional improvement in early-to-moderate osteoarthritis, with effects sustained at 12 months in many patients and beyond two years in some cohorts. Some patients elect repeat dosing at 12–24 months.

How is stem cell therapy different from a cortisone shot?

Cortisone is a potent anti-inflammatory but does not change the underlying tissue trajectory; repeated intra-articular cortisone may accelerate cartilage loss in some patients (McAlindon, JAMA 2017). MSC therapy aims to recalibrate the joint environment toward a less-inflamed, healing state through cellular signaling. Cortisone produces fast relief that fades; MSC therapy produces gradual benefit that develops over 4–12 weeks and can persist 12+ months.

How is stem cell therapy different from PRP?

PRP (platelet-rich plasma) is a concentration of your own platelets that delivers growth factors locally; it is autologous, fast to prepare, and useful particularly in tendinopathy. MSC therapy uses living mesenchymal stem cells (in our case, allogeneic UC-MSCs from screened umbilical-cord donations) which secrete a broader, sustained signaling complex over weeks. The two are complementary: many of our orthopedic protocols combine PRP with UC-MSC where both growth-factor concentration and longer paracrine signaling add value.

Is stem cell therapy an alternative to knee replacement?

It can be, for the right patient. Patients with early-to-moderate osteoarthritis (Kellgren-Lawrence grades 1–3) often have years of joint function left to preserve. Patients with end-stage bone-on-bone disease (KL 4) typically get a better, more durable outcome from joint replacement. The honest answer to whether it can defer or replace surgery for you depends on imaging and exam findings. That's what the consultation determines.

How long until I see results?

Most patients begin to notice changes in pain or stiffness in the 4–6 week window. Peak benefit typically develops over 3–6 months as the joint environment stabilizes. Improvement does not arrive on day one and is rarely dramatic in the first two weeks. That is normal and expected.

How long do the effects last?

Trial data show benefits sustained at 12 months in a substantial portion of patients (Vega 2015; Matas 2019), with some cohorts maintaining improvement at two years and beyond. Some patients elect to repeat at 12–24 months, particularly for high-demand joints, polyarticular disease, or progressive OA. Limited data suggest repeat dosing may produce additional benefit (Matas 2019).

Is the procedure painful?

Local anesthesia is used; sedation is not typically required for joint injections. Most patients describe the procedure itself as comparable to a standard intra-articular injection. Mild post-procedure soreness and swelling at the injection site is common in the first 48–72 hours.

How long is the recovery?

Light activity only for 48–72 hours after most single-joint protocols. Most patients walk out the same afternoon. Return to baseline activity is gradual over 1–6 weeks; high-impact training and contact sport are typically deferred until the 6-week mark or later, calibrated to the joint and indication.

Is treatment FDA-approved?

UC-MSC therapy is regulated by Mexico's COFEPRIS and is not FDA-approved in the United States. Our protocols are conducted under Mexican regulatory authority by board-certified physicians. We discuss the regulatory landscape, and what it means for your specific case, in writing during informed consent.

What are the side effects and risks?

Across the largest published orthopedic safety dataset (Centeno 2016, n=2,372 patients), the overall adverse event rate was low and most events were transient and self-limited. Common reactions: local injection-site soreness, mild swelling, and a brief inflammatory flare in the 24–72 hour window. Allogeneic UC-MSC therapy carries a risk profile distinct from autologous protocols, which we review during consent.

Does insurance cover stem cell therapy?

U.S. and Canadian insurance plans typically don't cover regenerative cellular therapy because most protocols aren't FDA-approved. Many patients use HSAs, FSAs, or medical financing. You'll receive an itemized quote before anything is scheduled.

How much does orthopedic stem cell therapy cost?

Pricing depends on protocol, dose, joint(s) treated, and combination therapy. Single-joint UC-MSC protocols typically begin in the mid-five-figure range (USD); high-dose IV, multi-joint packages, and complex spine protocols are quoted on the consult call once a physician has confirmed your plan. The consultation itself is complimentary.

Can stem cells repair a torn meniscus or ACL?

MSCs do not glue torn tissue back together. What they may do is improve the inflammatory and biological environment of the joint after partial tears or post-meniscectomy, supporting symptom reduction and slowing progression of post-traumatic arthritis. A complete meniscus or ligament rupture often still requires surgical repair; the regenerative protocol is a complement, not a substitute.

How do I know if I'm a candidate?

The strongest evidence supports patients with early-to-moderate joint disease (KL 1–3 OA, partial-thickness rather than full-thickness tendon involvement, pre-collapse rather than post-collapse AVN). Active inflammatory arthritis must be controlled by a rheumatologist first; active malignancy or infection are contraindications. Bring recent imaging (MRI ideal, X-ray minimum), a current medication list, and a thorough history to the consultation.

Why come to Tijuana for orthopedic stem cell therapy?

Tijuana is twenty minutes from the San Diego border and operates under Mexico's COFEPRIS regulatory framework, which allows regenerative protocols not yet FDA-approved in the United States. We use board-certified physicians, an ISO-accredited cell preparation laboratory, and concierge logistics from the moment patients arrive. Pickup, transport, lodging coordination.

References

Citations support the general scientific basis for the regenerative protocols discussed on this page. They do not constitute claims of guaranteed outcomes for any individual patient. Stem cell therapies are not FDA-approved for most conditions; protocols at TrueCell are provided under Mexican regulatory authority (COFEPRIS).

  1. Caplan AI, Correa D. The MSC: An Injury Drugstore. Cell Stem Cell. 2011;9(1):11–15. PubMed
  2. Matas J, Orrego M, Amenabar D, et al. Umbilical Cord-Derived Mesenchymal Stromal Cells (MSCs) for Knee Osteoarthritis. Stem Cells Translational Medicine. 2019;8(3):215–224. PubMed
  3. Pas HIMFL, Winters M, Haisma HJ, et al. Stem cell injections in knee osteoarthritis: a systematic review. British Journal of Sports Medicine. 2017;51(15):1125–1133. PubMed
  4. McAlindon TE, LaValley MP, Harvey WF, et al. Effect of Intra-articular Triamcinolone vs Saline on Knee Cartilage Volume and Pain. JAMA. 2017;317(19):1967–1975. PubMed
  5. Vega A, Martín-Ferrero MA, Del Canto F, et al. Treatment of Knee Osteoarthritis With Allogeneic Bone Marrow MSCs. Transplantation. 2015;99(8):1681–1690. PubMed
  6. Kuroda Y, Kitada M, Wakao S, et al. Unique multipotent cells in adult human mesenchymal cell populations. PNAS. 2010;107(19):8639–8643. PubMed
  7. Centeno CJ, Al-Sayegh H, Bashir J, et al. A multi-center analysis of adverse events in 2,372 adult patients undergoing autologous stem cell therapy for orthopaedic conditions. International Orthopaedics. 2016;40(8):1755–1765. PubMed
  8. Hernigou P, Beaujean F. Treatment of osteonecrosis with autologous bone marrow grafting. Clin Orthop Relat Res. 2002;(405):14–23. PubMed
  9. Vannini F, Cavallo M, Ramponi L, et al. Return to Sports After Bone Marrow-Derived Cell Transplantation for OCD of the Talus. Cartilage. 2017;8(1):80–87. PubMed
  10. Singh A, Gangwar DS, Singh S. Bone marrow injection: A novel treatment for tennis elbow. J Nat Sci Biol Med. 2014;5(2):389–391. PubMed
  11. Pettine KA, Murphy MB, Suzuki RK, Sand TT. Percutaneous injection of autologous bone marrow concentrate cells significantly reduces lumbar discogenic pain through 12 months. Stem Cells. 2015;33(1):146–156. PubMed
  12. Filardo G, Previtali D, Napoli F, et al. PRP Injections for the Treatment of Knee Osteoarthritis: Meta-Analysis. Cartilage. 2021;13(1_suppl):364S–375S. PubMed
  13. Thompson M, Mei SHJ, Wolfe D, et al. Cell therapy with intravascular administration of mesenchymal stromal cells continues to appear safe. EClinicalMedicine. 2020;19:100249. PubMed
  14. Lamo-Espinosa JM, Mora G, Blanco JF, et al. Intra-articular injection of two different doses of autologous bone marrow mesenchymal stem cells versus hyaluronic acid in knee OA. J Transl Med. 2016;14(1):246. PubMed

Talk to a physician, at no cost.

A board-certified physician reviews your imaging, diagnosis, and history before recommending anything — and will tell you if regenerative therapy is not the right fit. The consultation is complimentary.

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