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Journal of Bone and Joint Surgery - British Volume, Vol 87-B, Issue 12, 1658-1662.
doi: 10.1302/0301-620X.87B12.16422  
Copyright © 2005 by British Editorial Society of Bone and Joint Surgery
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Acetabular development after bipolar hemiarthroplasty for osteosarcoma in children

M. W. Manoso, MD, Fellow1; P. J. Boland, MD, Attending Orthopaedic Surgeon1; J. H. Healey, MD, Chief, Orthopaedic Service1; W. Tyler, MD, Resident1; and C. D. Morris, MD, MS, Attending Orthopaedic Surgeon1

1 Department of Surgery Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021, USA.

Correspondence should be sent to Dr C. D. Morris; e-mail: morrisc{at}mskcc.org

A retrospective analysis was performed of eight patients with an open triradiate cartilage, who underwent resection for osteosarcoma and reconstruction of the proximal femur with a hemiarthroplasty, in order to identify changes of acetabular development. An analysis of the centre-edge angle, teardrop-to-medial prosthesis distance, superior joint space, teardrop-to-superior prosthesis distance, degree of lateral translation, and arthritic changes, was performed on serial radiographs. The median age at the time of the initial surgery was 11 years (5 to 14).

All patients developed progressive superior and lateral migration of the prosthetic femoral head. Following hemiarthroplasty in the immature acetabulum, the normal deepening and enlargement of the acetabulum is arrested. The degree of superior and lateral migration of the prosthetic head depends on the age at diagnosis and the length of follow-up.




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C. R. Chandrasekar, R. J. Grimer, S. R. Carter, R. M. Tillman, A. Abudu, and L. M. Jeys
Unipolar proximal femoral endoprosthetic replacement for tumour: THE RISK OF REVISION IN YOUNG PATIENTS
J Bone Joint Surg Br, March 1, 2009; 91-B(3): 401 - 404.
[Abstract] [Full Text] [PDF]


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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General