Acetabular anteversion angle from early stage of Perthes disease to adolescence.

Yoshida, Takashi; Kim, Wook-Cheol; Nishida, Atsushi; Oka, Yoshinobu; Shirai, Toshiharu; Ikoma, Kazuya; Ueshima, Keiichiro; Fujiwara, Hiroyoshi et al. · J Orthop · 2016

retrospective_cohort · Level III

Where this comes from

Abstract

This study aimed to assess acetabular anteversion angle (AAA) from the early stage of Perthes disease to adolescence. Twenty-five patients treated conservatively were examined. Changes in AAA from initial to final measurement were compared between the two groups (G-group: Stulberg classes I and II; P-group: classes III and IV). In the G-group, AAA decreased significantly in the affected hip compared with the unaffected hip, whereas AAA decreased in both hips in the P-group. Acetabular retroversion may occur only in the affected hip or in both hips; in the latter case, the treatment outcome may be poor.

Anatomy