Table 1. The Range of Motion and Postoperative HHS between 36 mm COM Group and 28 mm Non-COM Group.
| Variable | 36 mm COM group | 28 mm non-COM group | P-value |
|---|---|---|---|
| Flexion (°) | 123.1±16.8 | 116.0±16.2 | 0.002 |
| Abduction (°) | 43.8±10.6 | 39.9±9.6 | 0.018 |
| Adduction (°) | 33.5±8.6 | 29.7±9.5 | 0.006 |
| External rotation (°) | 39.9±8.9 | 35.6±8.7 | 0.009 |
| Internal rotation (°) | 32.4±10.0 | 27.2±9.8 | 0.001 |
| Total range of motion (°) | 272.7±30.7 | 248.5±32.3 | <0.001 |
| Postoperative HHS (points) | 95.4±5.4 | 93.2±6.4 | 0.013 |
Values are presented as mean±standard deviation.
HHS: Harris hip score, COM: ceramic-on-metal.