Table 5.
Clinical findings before revision ACLR (n = 111), n.s. = not significant, STD standard deviation
| Characteristics | In total (n = 111) | Failed revision ACLR (n = 16) | Stable revision ACLR (n = 95) | p value |
|---|---|---|---|---|
| Grade of Lachman test preoperatively, n (%) | ||||
| Grade 1 (2–5 mm) | 29 (26.1) | 4 (25) | 25 (26.3) | p = 0.05 |
| Grade 2 (5–10 mm) | 72 (64.9) | 8 (50) | 64 (67.4) | |
| Grade 3 (> 10 mm) | 10 (9) | 4 (25) | 6 (6.3) | |
| Rolimeter side-to-side difference preoperatively, mean in mm ± STD (minimum—maximum) | 6 ± 2.4 (3–13) | 7 ± 3.2 (4–13) | 5.9 ± 2 (3–10) | p < 0.001 |
| Grade of pivot-shift test preoperatively, n (%) | ||||
| Grade 1 (glide) | 19 (17.1) | 1 (6.3) | 18 (18.9) | n.s |
| Grade 2 (clunk) | 59 (53.2) | 11 (68.8) | 48 (50.5) | |
| Grade 3 (gross) | 28 (25.2) | 4 (25) | 24 (25.3) | |
| Lateral knee instability preoperatively, n (%) | 18 (16.2) | 5 (31.3) | 13 (13.7) | n.s |
| Lateral knee instability grade 1 | 18 (16.2) | 5 (31.3) | 13 (13.7) | n.s |
| Lateral knee instability grade 2 | 0 | 0 | 0 | |
| Lateral knee instability grade 3 | 0 | 0 | 0 | |
| Medial knee instability preoperatively, n (%) | 36 (32.4) | 10 (62.5) | 26 (27.4) | p = 0.005 |
| Medial knee instability grade 1 | 11 (9.9) | 5 (31.3) | 6 (6.3) | p = 0.05 |
| Medial knee instability grade 2 | 22 (19.8) | 4 (25) | 18 (18.9) | |
| Medial knee instability grade 3 | 3 (2.7) | 1 (6,3) | 2 (2.1) | |
| Long leg standing axis, n (%) | ||||
| Normal long leg standing axis | 101 (91) | 14 (87.5) | 87 (91.6) | n.s |
| Valgus deformity (> 3°) | 3 (2.7) | 0 | 3 (3.2) | |
| Varus deformity (> 3°) | 7 (6.3) | 2 (12.5) | 5 (5.3) | |
| PTS greater than 11°, n (%) | 15 (13.5) | 6 (37.5) | 9 (9.5) | p = 0.002 |
| Femoral tunnel width preoperatively, mean ± STD | 9.92 ± 2.8 (3–21) | 8.9 ± 2.8 (5–15) | 10.1 ± 2.8 (3–21) | n.s |
| Tibial tunnel width preoperatively, mean ± STD | 10.4 ± 3.3 (0–18) | 9.9 ± 2.3 (6–14) | 10.5 ± 3.4 (0–18) | n.s |