Comparison of Tegner activity level and patient reported outcome measures between GJH and non-GJH patients at the time of surgery and RTS
| Variable | GJH (n=50) | Non-GJH (n=175) | P value |
| Preinjury Tegner activity level, median (range) | 9 (6–10) | 8 (6–10) | |
| Preinjury Tegner activity level, n (%) | 0.015 | ||
| 6 | 3 (6.0%) | 13 (7.4%) | |
| 7 | 3 (6.0%) | 29 (16.6%) | |
| 8 | 11 (22.0%) | 49 (28.0%) | |
| 9 | 18 (36.0%) | 56 (32.0%) | |
| 10 | 15 (30.0%) | 28 (16.0%) | |
| Tegner activity level at RTS, n (%) | 0.098 | ||
| 6 | 9 (18.0%) | 55 (31.4%) | |
| 7 | 16 (32.0%) | 45 (25.7%) | |
| 8 | 6 (12.0%) | 32 (18.3%) | |
| 9 | 14 (28.0%) | 29 (16.6%) | |
| 10 | 5 (10.0%) | 14 (8.0%) | |
| Returned to preinjury Tegner activity level, n (%) | 38 (76.0%) | 118 (67.4%) | 0.32 |
| Preoperative KOOS, mean (95% CI); | |||
| KOOS symptoms | 68.3 (57.5 to 79.1) n=9 | 66.4 (60.7 to 72.0) n=44 | 0.79 |
| KOOS pain | 80.6 (72.0 to 89.1) n=9 | 72.5 (67.2 to 77.8) n=44 | 0.18 |
| KOOS ADL | 88.7 (81.2 to 96.1) n=9 | 85.2 (80.2 to 90.3) n=44 | 0.59 |
| KOOS sports/recreation | 30.0 (10.6 to 49.4) n=9 | 40.0 (32.8 to 47.3) n=44 | 0.26 |
| KOOS QOL | 34.1 (13.9 to 54.3) n=9 | 37.5 (32.9 to 42.1) n=44 | 0.61 |
| KOOS4 | 53.3 (42.8 to 63.7) n=9 | 54.1 (49.3 to 58.9) n=44 | 0.88 |
| Postoperative KOOS at RTS, mean (95% CI) | |||
| KOOS Symptoms | 78.4 (73.5.4 to 83.3) n=48 | 77.5 (75.2 to 79.7) n=169 | 0.72 |
| KOOS Pain | 86.7 (82.9 to 90.4) n=48 | 87.2 (85.5 to 88.9) n=169 | 0.77 |
| KOOS Daily living | 97.8 (95.4 to 100.1) n=19 | 95.8 (93.9 to 97.7) n=60 | 0.28 |
| KOOS Sports and recreation | 69.5 (61.8 to 77.2) n=48 | 69.9 (66.7 to 73.0) n=169 | 0.92 |
| KOOS Quality of life | 56.1 (49.9 to 62.3) n=48 | 61.1 (58.4 to 63.8) n=169 | 0.099 |
| KOOS4 | 72.7 (67.8 to 77.6) n=48 | 73.9 (71.8 to 76.0) n=169 | 0.60 |
| ACL-RSI at RTS, mean (95% CI) | 63.3 (56.0 to 70.7) n=33 | 65.4 (62.1 to 68.8) n=128 | 0.58 |
| K-SES18 present at RTS, median (range) | 8.4 (0.4–10) n=49 | 8.6 (1.3–10) n=169 | 0.13 |
| K-SES18 future at RTS, median (range) | 8.0 (1.3–10) n=49 | 8.0 (3.3–10) n=169 | 0.39 |
ACL-RSI, anterior cruciate ligament return to sports index; ADL, activities of daily living; GJH, generalised joint hypermobility; KOOS, Knee injury and Osteoarthritis Outcome Score; K-SES, Knee Self-efficacy Scale; QOL, quality of life; RTS, return to sport.