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

Table 3 Comparison of pre- and postoperative hip ROM

ROM	Preoperative	Postoperative	Paired t test
ROM	Mean ± SD	Mean ± SD	P value (significance)
Flexion	50.7 ± 9.4	116.9 ± 11	< 0.0001 (ES)
IR with flexion	7.75 ± 3.7	42.6 ± 7
Abduction	23.4 ± 5.8	44 ± 2.8

IR Internal rotation, SD Standard deviation, ES Extremely significant, ROM Range of motion

ISSN: 1749-799X