Table 1.
Demographics and re-injury characteristics of the patient sample included in the study that underwent double bundle anterior cruciate ligament reconstruction, together with sub-group analysis based on age in comparison to that reported by Webster et al[2]
| Variable | Measure |
Total Cohort (< 30 yr) |
Patients (20-29 yr) |
Patients (< 20 yr) |
|
| Dataset (2018) | Dataset (2018) | Dataset (2018) | Webster et al[2], 2016 | ||
| Patients | n | 91 | 46 | 45 | 316 |
| Age (yr) | mean (SD), range | 20.4 (4.7), 13-29 | 24.0 (2.5), 20-29 | 16.2 (1.8), 13-19 | 17.2 (NR), 11-19 |
| Clinical follow-up (mo) | mean (SD), range | 59 (26), 25-107 | 63 (27), 29-107 | 55 (25), 25-102 | 60 (NR), 36-120 |
| Males | n (%) | 51 (56.0) | 29 (63.0) | 22 (48.9) | 200 (63.6) |
| Right knee | n (%) | 40 (44.0) | 25 (54.3) | 22 (48.9) | NR |
| Concurrent meniscal surgery | n (%) | 44 (48.4) | 18 (39.1.9) | 26 (57.8) | NR |
| ACL re-ruptures | n (%) | 6 (6.6) | 2 (4.3) | 4 (8.9) | 57 (18) |
| ACL re-ruptures | 95%CI | 95%CI: 1.4%-11.7% | 95%CI: 1.6%-10.3% | 95%CI: 0.4%-17.3% | 95%CI: 17%-29% |
| Mean time to re-rupture (mo) | mean (SD), range | 28 (28), 12-84 | 55.0 (41.7), 25-84 | 15 (6), 12-24 | 21.6 (NR), NR |
| Repair of re-rupture | n (%) | 5 (83.3) | 1 (50) | 3 (75) | NR |
| Subsequent surgery to ipsilateral knee | n (%) | 14 (15.4) | 7 (15.2) | 7 (15.6) | NR |
| Contralateral ACL injury | n (%) | 14 (15.4) | 9 (19.6) | 5 (11.1) | 56 (17.7) |
| Combined ACL injuries | n (%) | 20 (22.0) | 11 (23.9) | 9 (20.0) | 113 (35.8) |
ACL: Anterior cruciate ligament; SD: Standard deviation; NR: Not recorded; CI: Confidence interval.