Table 3.
Association between peak quadriceps strength and whole knee joint space narrowing
| Sex-specific tertiles of KES | N of cases (%) | OR (95% CI) for worsening, adjusted for baseline age, BMI, malalignment, surgery and PASE | |
|---|---|---|---|
| Men | Highest, 142~270 N•m (n=541) | 126 (23.3) | 1.0 |
| Middle, 108~141 N•m (n=524) | 127(24.2) | 0.99 (0.73, 1.34) | |
| Lowest, 22~107 N•m (n=537) | 142 (26.4) | 1.08 (0.77, 1. 51) | |
| P for linear trend | 0.7410 | ||
| Women | Highest, 82~206 N•m (n=756) | 146 (19.3) | 1.0 |
| Middle 61~80N•m (n=739) | 181 (24.5) | 1.19 (0.90, 1.55) | |
| Lowest, 20~60 N•m (n=759) | 256 (33.7) | 1.66 (1.26, 2.19) | |
| P for linear trend | <0.0001 | ||
• using generalized estimating equations to adjust for correlations between knees within subjects