Primary and secondary outcome measures*
| N (valid cases) | Early lengthening | N (valid cases) | Delayed lengthening | Total | Effect size | |
| Return to sport (in days) | 38 | 27.6 95% CI (21.7 to 33.5) | 33 | 33.9 95% CI (28.7 to 39.0) | 27 (IQR 17–39) | Cohen’s d=0.39 |
| Reinjury within 2 months | 34 | 3 (8.8%) | 36 | 3 (8.3%) | 6 (8.6%) | OR=0.94 |
| Reinjury 2–6 months | 31 | 1 (3.2%) | 32 | 2 (6.2%) | 3 (4.8%) | OR=2.00 |
| Reinjury 6–12 months | 34 | 2 (5.9%) | 29 | 1 (3.4%) | 3 (4.8%) | OR=0.57 |
| Total reinjuries | 34 | 6 (17.6%) | 29 | 6 (20.7%) | 12 (19%) |
*Valid cases; loss to follow-up has been taken into account.