Missouri osteochondral preservation system transplantation: Outcome scores from 24 months to 60+ months

Figure 1 Intra-operative images demonstrating an ICRS grade 4 lesion. A: Patella; B: Preparing the lesion site; C: Progressing to the transplantation of the allograft.

Figure 2 Non-contrast magnetic resonance showing sagittal and axial T2 slices. A-C: Patella at pre-operative state (A), at 6 months post-operative (B), and at 1-year post-operation (C), demonstrating a retained osteochondral allograft with maintained articular congruity and intact subchondral bone bed with overall improved fluid accumulation at the base of the allograft.

Figure 3 Non-contrast magnetic resonance. A-C: Showing sagittal and axial T2 slices of the patella 32 months post-operation demonstrating a retained osteochondral allograft with maintained articular congruity and intact subchondral bone bed. With overall improved fluid accumulation at the base of the allograft.

Figure 4 Histogram. A: Knee injury and Osteoarthritis Outcome Subscale Scores interval outcome scores; B: International Knee Documentation Committee & Lysholm interval outcome scores; C: Visual Analogue Scale interval outcome scores; D: Physical Short Form-12 & MSF-12 interval outcome scores. ^aP value ≤ 0.05, ^bP value ≤ 0.01, ^cP value ≤ 0.001. KOOS: Knee injury and Osteoarthritis Outcome Subscale Scores; IKDC: International Knee Documentation Committee; VAS: Visual Analogue Scale; PSF-12: Physical Short Form-12; MSF-12: Mental Short Form-12.

Figure 5 Histogram. A: Knee injury and Osteoarthritis Outcome Subscale Scores interval outcome scores; B: International Knee Documentation Committee & Lysholm interval outcome scores; C: Visual Analogue Scale interval outcome scores; D: Physical Short Form-12 & Mental Short Form-12 interval outcome scores. ^aP value ≤ 0.05, ^bP value ≤ 0.01, ^cP value ≤ 0.001. KOOS: Knee injury and Osteoarthritis Outcome Subscale Scores; IKDC: International Knee Documentation Committee; PSF-12: Physical Short Form-12; MSF-12: Mental Short Form-12; PreOp: Pre-operative.