:format(webp)/cdn.mskdoctors.com/storage/2026/9/F3M5ydLUMmZsFc0ECMdmh0YWdgHcQcDh.jpg)
ChondroFiller Injection for Post-Traumatic Knee Cartilage DamageCartilage damage from knee fractures cannot heal spontaneously and carries elevated osteoarthritis risk; ChondroFiller, an injectable collagen scaffold, recruits the patient's own stem cells to repair these focal defects.Cartilage damage from knee fractures cannot heal spontaneously and carries elevated osteoarthritis risk; ChondroFiller, an injectable collagen scaffold, recruits the patient's own stem cells to repair these focal defects.
:format(webp)/cdn.mskdoctors.com/storage/2026/8/SBmsVEyBqtof0WMPbvBeYdD1nSFHZHd2.jpg)
Unloader knee brace or surgery for cartilage damageUnloader braces open the joint 0.3 mm, modulating cartilage chemistry without rebuilding damage; high tibial osteotomy substantially outperforms bracing for pain relief in younger patients.Unloader braces open the joint 0.3 mm, modulating cartilage chemistry without rebuilding damage; high tibial osteotomy substantially outperforms bracing for pain relief in younger patients.
:format(webp)/cdn.mskdoctors.com/storage/2026/8/Mf2xfpLpk5v5iyif5YXaeLW842LflGA2.jpg)
Knee cartilage damage symptoms and who to seeArticular cartilage lacks a blood supply and cannot repair itself; untreated defects larger than 1 cm risk progressive worsening and osteoarthritis.Articular cartilage lacks a blood supply and cannot repair itself; untreated defects larger than 1 cm risk progressive worsening and osteoarthritis.
:format(webp)/cdn.mskdoctors.com/storage/2026/8/KrFVoOQZ12jhh6MLUrwKAQtNJok3RQHr.jpg)
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.
:format(webp)/cdn.mskdoctors.com/storage/2026/8/PkyQqvkgI6yAHN0E9iIKdMMEOp69yzRa.jpg)
How defect size determines OATS or OCAAutograft supply draws the line: defects below 2–4 cm² use OATS, harvesting bone and cartilage from the patient's own knee; larger lesions require OCA, using cadaveric tissue, because autograft volume runs out before expansive defects are adequately covered.Autograft supply draws the line: defects below 2–4 cm² use OATS, harvesting bone and cartilage from the patient's own knee; larger lesions require OCA, using cadaveric tissue, because autograft volume runs out before expansive defects are adequately covered.
:format(webp)/cdn.mskdoctors.com/storage/2026/8/JRFtBp0mcZmXZbOaQOz1rXHk9oX5RoWx.jpg)
Knee cartilage damage left untreated and when repair helpsCartilage lacks blood vessels, nerve fibres, and lymph channels, so repair cells cannot reach injuries and pain does not warn of damage, allowing lesions to expand silently until they become clinically serious.Cartilage lacks blood vessels, nerve fibres, and lymph channels, so repair cells cannot reach injuries and pain does not warn of damage, allowing lesions to expand silently until they become clinically serious.
:format(webp)/cdn.mskdoctors.com/storage/2026/8/Glw9JbiPP4VAFQxjx5hgGynC18Pe38KX.jpg)
Who qualifies for ChondroFiller injectionChondroFiller injects a collagen scaffold into focal cartilage lesions—typically grade III–IV defects under 6 cm²—to recruit the patient's progenitor cells for repair rather than replacing tissue artificially.ChondroFiller injects a collagen scaffold into focal cartilage lesions—typically grade III–IV defects under 6 cm²—to recruit the patient's progenitor cells for repair rather than replacing tissue artificially.
:format(webp)/cdn.mskdoctors.com/storage/2026/8/rjdUoSXZw7DBQPxbfDpZXz3tnkbbwYXu.jpg)
Who qualifies for MACI knee surgery?Patients aged 18–55 with deep focal cartilage damage (Grade III-IV, >2 cm²) qualify for MACI if their knees are structurally sound—stable ligaments, correct alignment, no generalised osteoarthritis—and conservative treatment has failed. The procedure is two-stage, with extended rehabilitation required.Patients aged 18–55 with deep focal cartilage damage (Grade III-IV, >2 cm²) qualify for MACI if their knees are structurally sound—stable ligaments, correct alignment, no generalised osteoarthritis—and conservative treatment has failed. The procedure is two-stage, with extended rehabilitation required.
:format(webp)/cdn.mskdoctors.com/storage/2026/7/gsAUDRVQLunD0FcY4ym5CZ9Bm37CFOyy.jpg)
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.
:format(webp)/cdn.mskdoctors.com/storage/2026/7/hni8MzqBb5F58Pemnb9wF3BSQI0fYlj6.jpg)
ChondroFiller injection vs surgery for focal knee cartilageAn ultrasound-guided collagen injection activates the joint's own regenerative cells to repair focal knee cartilage defects; 70–85% of treated patients report meaningful symptom relief within three to five years.An ultrasound-guided collagen injection activates the joint's own regenerative cells to repair focal knee cartilage defects; 70–85% of treated patients report meaningful symptom relief within three to five years.
:format(webp)/cdn.mskdoctors.com/storage/2026/6/SikVnK0CL8oEDHiTEBmScXvbSveyhmiA.jpg)
Single-stage or two-stage cartilage repairCartilage repair decisions hinge on defect size: lesions below roughly 1.5–2 cm² suit single-stage surgery, those of 2–4 cm² permit either approach, and larger defects typically require tissue replacement rather than repair.Cartilage repair decisions hinge on defect size: lesions below roughly 1.5–2 cm² suit single-stage surgery, those of 2–4 cm² permit either approach, and larger defects typically require tissue replacement rather than repair.
:format(webp)/cdn.mskdoctors.com/storage/2026/6/Ve9V5o28ujztizkD5TuIOycurhx13Uwl.jpg)
When cartilage repair is the right choiceCartilage repair succeeds for a focal defect in otherwise healthy joint tissue in younger patients, but fails in diffuse arthritis. Lesion size, depth, patient age, and activity level determine the appropriate technique.Cartilage repair succeeds for a focal defect in otherwise healthy joint tissue in younger patients, but fails in diffuse arthritis. Lesion size, depth, patient age, and activity level determine the appropriate technique.
