From: Impingement-free hip range of motion after osteochondroplasty and relative neck lengthening in adults with healed Perthes disease
WOMAC score
Paired t test
Range
Mean ± SD
Improvement mean ± SD
P value (significance)
Preoperative
80–94
88.4 ± 3.8
85.12 ± 4.7
< 0.0001 (E S)
Postoperative
0–11
4.6 ± 2.5