Subcategories for prevalence of reported ankle OA, severe injuries and ankle surgeries in retired football and rugby players
| Football | Rugby | |||||
| Total (n=401)* | ≤40 years (n=271) | >40 years (n=83) | Total (n=152) | ≤40 years (n=82) | >40 years (n=66) | |
| Prevalence ankle OA, % (95% CI) | 9.2 (6.4 to 12.1) | 8.5 (5.2 to 11.8) | 12.0 (5.0 to 19.1) | 4.6 (1.2 to 8.0) | 2.4 (0.9 to 5.8) | 4.5 (0.5 to 9.6) |
| 0 ankle injuries | 1 ankle injury | >1 ankle injury | 0 ankle injuries | 1 ankle injury | >1 ankle injury | |
| Severe ankle injuries total, % (n) | 42.5 (156) | 25.3 (93) | 32.2 (118) | 40.5 (60) | 27.7 (41) | 31.8 (47) |
| With ankle OA, % (n) | 5.7 (2) | 28.6 (10) | 65.7 (23) | 14.3 (1) | 42.9 (3) | 42.9 (3) |
| Without ankle OA, % (n) | 46.4 (154) | 25.0 (83) | 28.6 (95) | 41.8 (59) | 27.0 (38) | 31.2 (44) |
| No ankle surgeries | 1 ankle surgery | >1 ankle surgery | No ankle surgeries | 1 ankle surgery | >1 ankle surgery | |
| Ankle surgeries total, % (n) | 81.5 (299) | 10.9 (40) | 7.6 (28) | 79.7 (118) | 15.5 (23) | 4.7 (7) |
| With ankle OA, % (n) | 38.2 (13) | 29.4 (10) | 32.4 (11) | 42.9 (3) | 42.9 (3) | 14.3 (1) |
| Without ankle OA, % (n) | 85.9 (286) | 9 (30) | 5.1 (17) | 81.6 (115) | 14.2 (20) | 4.3 (6) |
*The sum of patients in the subcategories ≤40 years and >40 years does not equal the ‘total number of participants’ due to missing data (regarding age).
n, number; OA, osteoarthritis.