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Case Reports in Orthopedics
Volume 2017, Article ID 9806863, 4 pages
Case Report

Complete Resection of a Massive Synovial Osteochondromatosis of the Hip Using an Anterior Approach: A Report of Two Cases

1Department of Orthopaedic Surgery, Kyoto University, Kyoto, Japan
2Department of Orthopaedic Surgery, Nagahama City Hospital, Nagahama, Japan

Correspondence should be addressed to Masanao Kataoka;

Received 15 June 2017; Accepted 20 August 2017; Published 20 September 2017

Academic Editor: Elke R. Ahlmann

Copyright © 2017 Masanao Kataoka et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Arthroscopic excision of synovial osteochondromatosis of the hip is commonly performed. However, when the lesion extends to the extra-articular space of the hip joint, excision using arthroscopy becomes difficult. Although surgical dislocation of the hip with a trochanteric flip osteotomy is commonly used, manual access to the inferomedial portion of the acetabulum remains difficult. In this case report, we describe arthroscopic resection followed by open surgery using an anterior approach with or without surgical dislocation to excise a synovial osteochondromatosis of the hip that had extended to the extra-articular space and formed a herniation sac. Excision was completed without complications. An anterior approach with or without surgical dislocation should be considered as a surgical option for the treatment of a massive synovial osteochondromatosis of the hip joint.