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Table 3 Radiologic measurements

From: Total hip arthroplasty through the direct anterior approach with and without the use of a traction table: a matched-control, retrospective, single-surgeon study

  Without table (n = 75) With table (n = 75) Significance (p value)
Acetabular inclination (°) 41.83 (4.8) 43.68 (4.3) 0.11
 Within the “safe zone” 73 (97.3%) 70 (93.3%)  
Acetabular anteversion (°) 29.56 (6) 32 (7) 0.41
 Within the “safe zone” 14 (18.6%) 14 (18.6%)  
Vertical center of rotation (mm) -1.80 (4.4) -2.48 (5) 0.38
Horizontal center of rotation (mm) -1.5 (3.9) -2.3 mm (4.5) 0.36
Leg length discrepancy (mm) 2.4 (2) 3.67 (3.1) p ≤ 0.05
 - Outliers > 5 mm 8 (10%) 15 (20%)  
 - Outliers > 10 mm 0 (0%) 2 (2.66%)  
  1. Values were given as mean and standard deviation
  2. “Safe zone” for acetabular inclination and anteversion was set at 30–50° and 5–25°, respectively, as described by Lewinnek et al. [25]. A positive leg length discrepancy value was used when the operated leg was longer than the contralateral side