Table 2.
Comparison of age groups: (A) younger patients (age < =20 years) and (B) older patients (age > 20 years); significant values are marked with asterisk
| Age group A (N = 13) mean (SD) |
Age group B (N = 5) mean (SD) |
Mean difference | p value | |
|---|---|---|---|---|
| KOOS 5 pre-operative | 68.9 (24.8) | 41.2 (25.8) | − 27.7 | 0.052* |
| KOOS 5 post-operative | 88.1 (9.6) | 71.1 (21.1) | − 17.0 | 0.029* |
| KOOS 5 improvement | 19.2 (23.7) | 30.0 (24.4) | 10.8 | 0.402 |
| KOOS pain improvement | 18.8 (25.2) | 31.1 (27.9) | 12.3 | 0.428 |
| KOOS sym improvement | 11.5 (19.5) | 30.0 (23.4) | 18.5 | 0.140 |
| KOOS ADL improvement | 15.4 (25.1) | 37.1 (36.7) | 21.7 | 0.254 |
| KOOS sport improvement | 25.8 (31.0) | 23.0 (29.9) | − 2.8 | 0.727 |
| KOOS QOL improvement | 24.5 (31.3) | 28.8 (24.4) | 4.2 | 0.790 |