Table 6 Comparisons of outcomes between osteoarthritis and osteonecrosis
OA | ON | *P value | ||
|---|---|---|---|---|
(n = 42) | (n = 32) | |||
Age | 68.7 ± 8.0 | 67.7 ± 8.1 | 0.81 | |
Knee score | Preop | 57.1 ± 12.8 | 57.5 ± 15.5 | 0.72 |
Postop | 83.9 ± 10.1 | 83.8 ± 10.5 | 0.86 | |
Function score | Preop | 67.6 ± 12.0 | 63.4 ± 9.5 | 0.15 |
Postop | 86.5 ± 13.0 | 89.4 ± 11.3 | 0.08 | |
sFTA | Preop | 181.8 ± 2.5 | 180.1 ± 2.0 | 0.24 |
Postop | 170.9 ± 3.1 | 172.0 ± 2.6 | 0.55 | |
%MAD | Preop | 18.9 ± 11.5 | 24.8 ± 11.4 | 0.89 |
Postop | 64.8 ± 10.7 | 63.3 ± 11.1 | 0.62 | |
Tegner activity scale | Preop | 3.1 ± 1.9 | 3.0 ± 1.8 | 0.54 |
Postop | 2.7 ± 1.5 | 2.6 ± 1.6 | 0.88 | |
Preop. total participation in sports, n (%) | 32 (76.2) | 27 (84.4) | 0.39 | |
RTS, n (%) | 29 (90.6) | 26 (96.3) | 0.21 | |
Preop. impact level, n | High | 7 | 5 | |
Intermediate | 4 | 1 | ||
Low | 21 | 21 | 0.91 | |
Postop. impact level, n | High | 4 | 3 | |
Intermediate | 2 | 0 | ||
Low | 29 | 24 | 0.8 | |