Acetabular anteversion angle from early stage of Perthes disease to adolescence

Takashi Yoshida; Wook-Cheol Kim; Atsushi Nishida; Yoshinobu Oka; Toshiharu Shirai; Kazuya Ikoma; Keiichiro Ueshima; Hiroyoshi Fujiwara; Toshikazu Kubo

doi:10.1016/j.jor.2016.08.001

Acetabular anteversion angle from early stage of Perthes disease to adolescence

J Orthop. 2016 Aug 29;13(4):410-3. doi: 10.1016/j.jor.2016.08.001. eCollection 2016 Dec.

Authors

Takashi Yoshida¹, Wook-Cheol Kim¹, Atsushi Nishida¹, Yoshinobu Oka¹, Toshiharu Shirai¹, Kazuya Ikoma¹, Keiichiro Ueshima¹, Hiroyoshi Fujiwara¹, Toshikazu Kubo¹

Affiliation

¹ Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.

Abstract

Objective: This study aimed to assess acetabular anteversion angle (AAA) from the early stage of Perthes disease to adolescence.

Methods: 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).

Results: 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.

Conclusion: Acetabular retroversion may occur only in the affected hip or in both hips; in the latter case, the treatment outcome may be poor.

Keywords: Acetabular retroversion; Cross-over sign; Perthes disease.