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Table 2 Preoperative and postoperative data of the operated hips

From: Percutaneous medial hemi-epiphysiodesis using a transphyseal screw for caput valgum associated with developmental dysplasia of the hip

N = 18 Preoperative statusa Latest follow-upa P value†
Proximal femur
 Hilgenreiner-epiphyseal angle (°) 5.1 ± 11.3 20.6 ± 11.3 0.001
 Head-shaft angle (°) 169.5 ± 10.5 150.0 ± 10.0 <0.001
 Neck-shaft angle (°) 143.0 ± 7.9 132.1 ± 6.0 <0.001
Femoral neck
 Articulo-trochanteric distance (mm) 21.1 ± 7.9 13.6 ± 8.1 0.001
 Femoral neck length ratiob 0.929 ± 0.173 0.787 ± 0.281 0.056
Acetabular morphology & subluxationc
 Sharp angle (°) 46.7 ± 4.8 44.9 ± 5.5 0.030
 Acetabular roof angle (°) 17.1 ± 7.4 16.3 ± 8.0 0.408
 LCEA (°) 23.3 ± 6.1 23.9 ± 8.0 0.717
 Medial joint space width ratiob 1.408 ± 0.518 1.396 ± 0.489 0.507
 CHDDb (%) 9.2 ± 5.5 6.2 ± 5.1 0.003
  1. †Wilcoxon signed rank test
  2. aThe values are given as the mean and the standard deviation
  3. bUnilateral cases only (N = 14)
  4. cTwo hips which underwent pelvic osteotomy concurrent with hemi-epiphysiodesis were excluded