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Table 6 Comparison of pre &postoperative radiographic appearance

From: Impingement-free hip range of motion after osteochondroplasty and relative neck lengthening in adults with healed Perthes disease

Radiological evaluation Paired t test
  Anatomical mPFA CTD ATD AA of Tonnis P Value
Preoperative 50.4° ± 9.3 15.6 mm ± 2 − 5.47 mm ± 1.8 16° ± 2.7 < 0.0001 (ES)
Postoperative 87.7° ± 1.9 15.6 mm ± 2 5.5 mm ± 0.8 -----
  1. mPFA Medial proximal femoral angle, CTD Centero-trochanteric distance, ATD Articulo-trochanteric distance, AA Acetabular angle, ES Extremely significant