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OATS mosaicplasty for sports knee cartilage repairIn a ten-year trial of athletes, osteochondral autograft transfer showed 14% treatment failure versus 38% for microfracture, a divergence emerging between years five and ten because fibrocartilage stimulated by microfracture degrades under repetitive athletic loading whilst transplanted hyaline cartilage retains structural integrity.In a ten-year trial of athletes, osteochondral autograft transfer showed 14% treatment failure versus 38% for microfracture, a divergence emerging between years five and ten because fibrocartilage stimulated by microfracture degrades under repetitive athletic loading whilst transplanted hyaline cartilage retains structural integrity.
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Knee Cartilage Repair and PreservationArticular cartilage lacks blood vessels, so when damaged it forms fibrocartilage—a mechanically inferior scar tissue that typically deteriorates within two to three years. This biological constraint shapes every treatment option, from temporary symptom relief to procedures attempting true cartilage regeneration.Articular cartilage lacks blood vessels, so when damaged it forms fibrocartilage—a mechanically inferior scar tissue that typically deteriorates within two to three years. This biological constraint shapes every treatment option, from temporary symptom relief to procedures attempting true cartilage regeneration.
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When knee pain needs an orthopaedic assessmentMost knee pain settles with rest and physiotherapy; the threshold for orthopaedic assessment is persistent dysfunction despite weeks of conservative care, or acute structural changes—and assessment maps options rather than commits to surgery.Most knee pain settles with rest and physiotherapy; the threshold for orthopaedic assessment is persistent dysfunction despite weeks of conservative care, or acute structural changes—and assessment maps options rather than commits to surgery.
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High tibial osteotomy as a first step in knee preservationHigh tibial osteotomy repositions the tibia to shift weight-bearing from damaged inner knee cartilage to the healthier outer compartment. For younger, active patients, the procedure preserves the natural joint and potentially extends its working life by a decade or more.High tibial osteotomy repositions the tibia to shift weight-bearing from damaged inner knee cartilage to the healthier outer compartment. For younger, active patients, the procedure preserves the natural joint and potentially extends its working life by a decade or more.
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ChondroFiller™ durability compared with ArthrosamidChondroFiller™ recruits the patient's own progenitor cells to build new cartilage tissue within a collagen scaffold. Three-year published follow-up shows mean IKDC scores of 80 — a 32.4-point improvement from baseline — with durability reported to extend beyond five years.ChondroFiller™ recruits the patient's own progenitor cells to build new cartilage tissue within a collagen scaffold. Three-year published follow-up shows mean IKDC scores of 80 — a 32.4-point improvement from baseline — with durability reported to extend beyond five years.
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OATS Mosaicplasty Knee Recovery TimelineFull recovery from OATS mosaicplasty spans 6–12 months, extending to 12–18 months for competitive sport, because transplanted bone-and-cartilage plugs require time for biological integration and graft maturation.Full recovery from OATS mosaicplasty spans 6–12 months, extending to 12–18 months for competitive sport, because transplanted bone-and-cartilage plugs require time for biological integration and graft maturation.
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Medial knee pain that isn't a meniscus tearAround 850,000 meniscal surgeries are performed annually in the United States, yet five other structures in the medial knee generate pain so similar that clinicians commonly mistake them for meniscal tears.Around 850,000 meniscal surgeries are performed annually in the United States, yet five other structures in the medial knee generate pain so similar that clinicians commonly mistake them for meniscal tears.
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Who Qualifies for OATS Knee Cartilage RepairOATS and mosaicplasty repair focal knee cartilage defects of 1–4 cm² with hyaline cartilage in a single operation; suitable for physically active patients aged 16–50, both achieve return to sport in 66–91% of cases.OATS and mosaicplasty repair focal knee cartilage defects of 1–4 cm² with hyaline cartilage in a single operation; suitable for physically active patients aged 16–50, both achieve return to sport in 66–91% of cases.
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The cost of leaving a knee cartilage defect untreatedKnee cartilage defects do not heal because cartilage lacks blood supply; defects widen under load with each step, spreading damage to surrounding tissue and progressing towards osteoarthritis if untreated.Knee cartilage defects do not heal because cartilage lacks blood supply; defects widen under load with each step, spreading damage to surrounding tissue and progressing towards osteoarthritis if untreated.
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How defect size and age decide OATS or OCADefect size determines whether focal cartilage repair uses autograft (OATS, harvested from the patient's own knee) or donor allograft (OCA): below 2 cm², autograft is viable; above 4 cm², only allograft remains before arthroplasty.Defect size determines whether focal cartilage repair uses autograft (OATS, harvested from the patient's own knee) or donor allograft (OCA): below 2 cm², autograft is viable; above 4 cm², only allograft remains before arthroplasty.
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Who qualifies for OATS knee surgeryOATS transplants hyaline cartilage harvested from a low-load zone of the same knee to repair focal defects. The donor site heals with fibrocartilage, creating potential for catching, locking, or anterior knee pain.OATS transplants hyaline cartilage harvested from a low-load zone of the same knee to repair focal defects. The donor site heals with fibrocartilage, creating potential for catching, locking, or anterior knee pain.
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When cartilage repair makes sense before knee replacementTotal knee replacement achieves over 90% long-term success, yet patients under 55 face substantially higher revision risk within 20 years. For focal cartilage damage in the mid-40s, repair offers a joint-preservation pathway suited to this earlier disease stage—provided defect size and patient profile meet defined clinical criteria.Total knee replacement achieves over 90% long-term success, yet patients under 55 face substantially higher revision risk within 20 years. For focal cartilage damage in the mid-40s, repair offers a joint-preservation pathway suited to this earlier disease stage—provided defect size and patient profile meet defined clinical criteria.
