Table 2.
Reoperations.
| Variable | Autologous Chondrocyte Implantation, n = 315 | Osteochondral Allograft Transplantation, n = 594 | P |
|---|---|---|---|
| Overall reoperation rate, n (%) | 213 (67.6) | 240 (40.4) | <0.0001* |
| ACI | 185 (58.7) | 0 (0.0) | <0.0001* |
| OCA | 7 (2.5) | 203 (34.2) | <0.0001* |
| OAT | 0 (0.0) | 3 (0.5) | 0.206 |
| Osteotomy | 58 (18.4) | 28 (4.7) | <0.0001* |
| Osteotomy-DFO | 2 (0.6) | 6 (1.0) | 0.564 |
| Osteotomy-TTO | 48 (15.2) | 15 (2.5) | <0.0001* |
| Osteotomy-HTO | 7 (2.2) | 7 (1.2) | 0.224 |
| Arthroscopic | 100 (31.7) | 115 (19.4) | <0.0001* |
| Chondroplasty | 39 (12.4) | 35 (5.9) | 0.0007* |
| Loose body removal | 6 (1.9) | 8 (1.4) | 0.516 |
| Lysis of adhesions | 14 (4.4) | 11 (1.9) | 0.023* |
| Synovectomy | 30 (9.5) | 30 (5.1) | 0.010* |
| Microfracture | 7 (2.2) | 24 (4.0) | 0.151 |
| Debridement for infection | 1 (0.3) | 3 (0.5) | 0.684 |
| Manipulation under anesthesia | 4 (1.3) | 7 (1.2) | 0.905 |
| Knee arthroplasty | 4 (1.3) | 19 (3.2) | 0.078 |
| UKA | 1 (0.3) | 3 (0.5) | 0.684 |
| TKA | 3 (1.0) | 16 (2.7) | 0.081 |
ACI = autologous chondrocyte implantation; OCA = osteochondral allograft transplantation; OAT = osteochondral autograft transplantation; HTO = high tibial osteotomy; DFO = distal femoral osteotomy; TTO = tibial tubercle osteotomy; UKA = unicompartmental knee arthroplasty; TKA = total knee arthroplasty.
*
Statistically significant.