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Table 2 CT scan parameters, preoperative values for both sides (contralateral side for reference) and post-operative values for operated side

From: Geometrical restoration during total hip arthroplasty is related to change in gait pattern - a study based on computed tomography and three-dimensional gait analysis

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]
  1. Pre- and postoperative values are presented as mean (SD). Difference between pre- and postoperative values and between postoperative and contralateral values are presented as mean difference and 95% confidence interval. Statistically significant differences are highlighted in bold
  2. CT computed tomography, CI confidence interval, FO femoral offset, AO acetabular offset