Table 3 The angle between the original AP axis (AP1, AP2) and 0°AP axis
Angle | HA group(n = 40) Mean ± SD(range) | OA group(n = 42) Mean ± SD (range) | t | P-value |
|---|---|---|---|---|
The angle between 1/3MPT axis and 0°AP axis | + 9.26° ± 6.31° (− 1.71°, + 27.05°) | + 3.15° ± 5.62° (− 13.68°, + 16.34°) | 4.626 | 0.000 |
The angle between 1/3MTT axis and 0°AP axis | + 13.02° ± 7.18° (− 7.00°, + 25.19°) | + 6.42° ± 5.44° (− 8.42°, + 16.85°) | 4.702 | 0.001 |