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Cartilage Repair
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Choosing between ACI and MACI for cartilage repair
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Miss Sophie Harris
6/8/2026
Choosing between ACI and MACI for cartilage repair
MACI cartilage grafts show 90% fill at two years but decline to 49% by ten years; 73% become fibrocartilage rather than the hyaline cartilage needed for durability.MACI cartilage grafts show 90% fill at two years but decline to 49% by ten years; 73% become fibrocartilage rather than the hyaline cartilage needed for durability.
OATS or MACI for mid-size knee cartilage defects
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Miss Sophie Harris
31/7/2026
OATS or MACI for mid-size knee cartilage defects
Within the 2–4 cm² range, cartilage defects are large enough that a single plug fails to cover them, yet small enough that two repair techniques remain viable: osteochondral autograft restores cartilage and bone in one operation but creates coverage gaps, whilst matrix-induced autologous chondrocyte implantation requires two operations with laboratory…Within the 2–4 cm² range, cartilage defects are large enough that a single plug fails to cover them, yet small enough that two repair techniques remain viable: osteochondral autograft restores cartilage and bone in one operation but creates coverage gaps, whilst matrix-induced autologous chondrocyte implantation requires two operations with laboratory culture but accommodates irregular shapes without gaps.
AMIC vs MACI for knee cartilage repair
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Miss Sophie Harris
19/7/2026
AMIC vs MACI for knee cartilage repair
Standalone microfracture for knee cartilage defects has less than 60% survivorship at three years; AMIC adds a collagen membrane to stabilize repair, whilst MACI uses cultured chondrocytes and shows superiority in the SUMMIT trial for lesions over 3 cm².Standalone microfracture for knee cartilage defects has less than 60% survivorship at three years; AMIC adds a collagen membrane to stabilize repair, whilst MACI uses cultured chondrocytes and shows superiority in the SUMMIT trial for lesions over 3 cm².
MACI versus microfracture for knee cartilage repair
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Miss Sophie Harris
7/7/2026
MACI versus microfracture for knee cartilage repair
MACI outperforms microfracture for knee cartilage defects of 3 cm² or larger, according to the SUMMIT randomised trial, which found significantly greater improvements in pain and function at two years that persisted through five years.MACI outperforms microfracture for knee cartilage defects of 3 cm² or larger, according to the SUMMIT randomised trial, which found significantly greater improvements in pain and function at two years that persisted through five years.
MACI vs Microfracture for Knee Cartilage Repair
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Miss Sophie Harris
28/6/2026
MACI vs Microfracture for Knee Cartilage Repair
For focal knee cartilage defects above 3 cm², MACI outperformed microfracture across all clinical measures: pain scores improved to 82.5 versus 70.9 at two years, with durability sustained at five-year follow-up.For focal knee cartilage defects above 3 cm², MACI outperformed microfracture across all clinical measures: pain scores improved to 82.5 versus 70.9 at two years, with durability sustained at five-year follow-up.
ACI vs MACI for knee cartilage repair
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Miss Sophie Harris
23/6/2026
ACI vs MACI for knee cartilage repair
Both ACI and MACI for knee cartilage repair follow a two-stage structure: cartilage biopsy with laboratory expansion, then implantation. The difference lies in the second stage's delivery mechanism—ACI injects expanded cells beneath a periosteal patch, while MACI pre-seeds them onto a collagen membrane secured with fibrin glue.Both ACI and MACI for knee cartilage repair follow a two-stage structure: cartilage biopsy with laboratory expansion, then implantation. The difference lies in the second stage's delivery mechanism—ACI injects expanded cells beneath a periosteal patch, while MACI pre-seeds them onto a collagen membrane secured with fibrin glue.
AMIC versus MACI for focal cartilage repair
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Miss Sophie Harris
7/6/2026
AMIC versus MACI for focal cartilage repair
AMIC repairs focal cartilage defects in one operation: drilling channels into damaged cartilage releases a blood clot rich in stem cells, which a collagen membrane then stabilises and concentrates to guide tissue repair. A 2025 trial found it equivalent to MACI at two years.AMIC repairs focal cartilage defects in one operation: drilling channels into damaged cartilage releases a blood clot rich in stem cells, which a collagen membrane then stabilises and concentrates to guide tissue repair. A 2025 trial found it equivalent to MACI at two years.
Choosing ACI, MACI or single‑stage cell surgery
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Miss Sophie Harris
2/6/2026
Choosing ACI, MACI or single‑stage cell surgery
ACI and MACI are two-stage repairs for localised full-thickness cartilage defects, while single-stage techniques place cells or cell-rich material into the defect in one operation. MACI has the strongest long-term follow-up, but single-stage methods still rest mainly on smaller, less comparable series.ACI and MACI are two-stage repairs for localised full-thickness cartilage defects, while single-stage techniques place cells or cell-rich material into the defect in one operation. MACI has the strongest long-term follow-up, but single-stage methods still rest mainly on smaller, less comparable series.
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