Table 2.
Japanese Orthopaedic Association hip scores, hip abductor strength, knee extensor strength, and TUG values before (Pre) and 6 months (6M) and 12 months (12M) after THA for THA patients, and muscle strength and TUG value for healthy subjects
| p value (vs 12M) | Control | p value (vs control) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre | 6M | 12M | Pre vs | 6M vs | 6M vs | 12M vs | |||||||
| JOA hip score | 42.0 | (32.0 to 49.0) | 75.0 | (73.0 to 78.0) | 78.0 | (76.0 to 80.0) | <.001 b | <.001 b | |||||
| Muscle strength (Nm) | |||||||||||||
| Hip abductor | 40.7 | (10.8) | 51.1 | (12.0) | 55.0 | (12.3) | <.001 a | <.001 a | 69.1 | (13.7) | <.001 c | <.001 c | |
| Knee extensor | 53.8 | (16.1) | 62.3 | (16.0) | 68.5 | (16.4) | <.001 a | <.001 a | 71.1 | (21.0) | <.001 c | .133 c | |
| TUG value (sec) | 8.4 | (1.8) | 6.9 | (1.1) | 6.7 | (0.9) | <.001 a | <.001 a | 5.7 | (0.6) | <.001 d | <.001 d | |
Abbreviations: JOA Japanese Orthopaedic Association, TUG timed up and go
a: Paired t-test, b: Wilcoxon signed-rank test, c: general linear model adjusted for body weight, d: two-sample t-test. Values are presented as mean (standard deviation) or median (1st quartile to 3rd quartile). TUG values were compared with missing values excluded (n = 81)