Table 2 CT scan parameters, preoperative values for both sides (contralateral side for reference) and post-operative values for operated side
n = 65 | Contralateral ref. values | Pre THA | Post THA | Mean diff. post vs pre mean [95% CI] | Mean diff. post vs. contralateral mean [95% CI] |
|---|---|---|---|---|---|
Anteversion (°) | 33.8 (10.2) | 33.7 (10.0) | 33.7 (9.6) | 0.1 [−1.7, 1.9] | - 0.1 [−3.5, 3.4] |
Acetabular offset (mm) | 91.9 (5.0) | 95.0 (5.2) | 89.3 (4.3) | −5.6 [−6.5, −4.8] | - 2.6 [−4.2, −0.9] |
Femoral offset (mm) | 44.0 (6.2) | 43.5 (6.6) | 46.7 (6.2) | 3.2 [2.2, 4.2] | 2.7 [0.6, 4.9] |
Global offset (mm) | 135.9 (9.2) | 138.5 (9.6) | 136.1 (8.1) | −2.4 [−3.4, −1.5] | 0.2 [− 2.8, 3.2] |
FO/AO quota | 0.48 (0.06) | 0.46 (0.07) | 0.52 (0.07) | 0.06 [0.05, 0.08] | 0.04 [0.02, 0.07] |