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Table 3 3D gait analysis parameters, pre- and postoperative data from the 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 Pre
THA
Post
THA
Mean diff. post vs. pre [95%CI]
Overall gait pattern
 Gait Deviation Index 81 (12) 90 (10) 8.9 [5.7, 12.1]
Time and distance parameters
 Walking speed (m/s) 1.02 (0.2) 1.14 (0.2) 0.13 [0.1, 0.2]
 Time in single stance (s) 36.2 (3.3) 38.0 (1.7) 1.8 [1.1, 2.5]
Gait variables hypothesized to be associated with femoral neck anteversion
 Hip rotation (°) 0.3 (6.8) 0.3 (5.4) 0.0 [−1.7, 1.8]
 Pelvic rotation (°) 0.8 (3.6) −0.5 (2.5) −1.3 [−2.1, −0.4]
 Foot progression (°) −10.0 (7.2) −5.1 (6.1) 4.9 [3.8, 6.1]
Gait variables hypothesized to be associated with femoral and acetabular offsets
 Hip add mom avg. (Nmm/kg) 350 (88) 389 (88) 40 [18.7, 60.5]
 Hip add mom peak 1 (Nmm/kg) 575 (134) 616 (122) 40 [9.3, 71.6]
 Hip add mom peak 2 (Nmm/kg) 543 (120) 600 (133) 57 [27.6, 85.5]
 Trunk obliquity (°) −3.9 (2.4) −3.0 (2.3) 0.9 [0.3, 1.5]
 Pelvic obliquity (°) 2.7 (2.7) 2.1 (2.2) −0.6 [−1.3, 0.1]
 Hip adduction (°) 0.2 (3.1) 1.4 (3.1) 1.2 [0.2, 2.1]
  1. Pre- and postoperative values are presented as mean (SD). Difference between post- and preoperative values are presented as mean difference and 95% confidence interval. Statistically significant differences are highlighted in bold
  2. THA total hip arthroplasty, CI confidence interval, add adduction, mom moment, avg. average