The Archives of Bone and Joint Surgery

The Archives of Bone and Joint Surgery

Spherical Periacetabular Osteotomy-Inspired Extra-Articular Hip Resection

Document Type : TECHNICAL NOTE

Authors
Akio Sakamoto 1
Toshihiko Hara 2
Shuichi Matsuda 1
1 Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
2 Department of Orthopaedic Surgery, Izuka Hospital, Izuka, Japan
10.22038/abjs.2025.90627.4101
Abstract
Extra-articular hip resection (EAHR) for malignant bone tumors is a challenging procedure. Conventional approaches often require resection of both the anterior and posterior columns of the acetabulum, leading to instability of the pelvic ring. In this paper, we report on EAHR, inspired by periacetabular osteotomy, using a spherical periacetabular osteotomy (SPO) technique characterized by the preservation of the medial pelvic cortex. Unlike SPO, the attachment of the rectus femoris tendon and the anterior acetabular column are preserved. The tumor is resected, and a total hip arthroplasty is performed. This method not only provides mechanical stability to the pelvic ring but also leaves enough bone for placement of an acetabular implant cup.
Level of evidence: IV
Keywords
Acetabulum
Hip joint
Osteosarcoma
Osteotomy
Reconstructive surgical procedures
Subjects
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The Archives of Bone and Joint Surgery
Volume 14, Issue 10
October 2026
Pages 682-686

  • Receive Date 22 August 2025
  • Revise Date 04 October 2025
  • Accept Date 03 November 2025