Table 3. Technical Characteristics of Revision Surgerya.
| Primary-Revision ACLR | Multiple-Revision ACLR | P Value | |
|---|---|---|---|
| Femoral tunnelb | |||
| Same tunnel, optimal position | 286 (27) | 33 (22) | <.01 |
| Same tunnel, compromised position | 21 (2) | 2 (1) | NS |
| New tunnel aperture | 508 (48) | 78 (52) | NS |
| Blended tunnel aperture | 197 (19) | 21 (14) | NS |
| Double tunnel (second tunnel) | 30 (3) | 16 (11) | <.01 |
| Over-the-top | 2 (<1) | 0 (0) | |
| Modified over-the-top | 2 (<1) | 0 (0) | |
| Femoral tunnel bone grafting | |||
| None performed | 965 (92) | 112 (74) | <.01 |
| Previously staged | 54 (5) | 33 (22) | <.001 |
| Performed at this revision | 26 (3) | 5 (3) | NS |
| Tibial tunnel | |||
| Same tunnel, optimal position | 617 (59) | 73 (48) | <.01 |
| Same tunnel, compromised position | 19 (2) | 4 (3) | NS |
| New tunnel aperture | 173 (17) | 24 (16) | NS |
| Blended tunnel aperture | 213 (20) | 34 (23) | NS |
| Double tunnel (second tunnel) | 26 (3) | 15 (10) | .03 |
| Tibial tunnel bone grafting | |||
| None performed | 964 (92) | 108 (72) | <.01 |
| Previously staged | 56 (5) | 37 (25) | <.001 |
| Performed at this revision | 28 (3) | 5 (3) | NS |
| Graft type | |||
| Autograft | 501 (48) | 92 (61) | <.01 |
| Allograft | 520 (50) | 54 (36) | <.01 |
| Combination autograft and allograft | 27 (3) | 5 (3) | NS |
| Graft source | |||
| Achilles | 35 (3) | 5 (3) | NS |
| Bone–patellar tendon–bone | 557 (53) | 88 (58) | NS |
| Quadriceps | 3 (<1) | 1 (<1) | NS |
| Soft tissue/other | 451 (43) | 57 (38) | NS |
a
Values are expressed as n (%). ACLR, anterior cruciate ligament reconstruction; NS, nonsignificant.
b
Statistical analysis was not performed on the over-the-top and modified over-the-top techniques because of insufficient sample size.