Total hip arthroplasty using a short, metaphyseal-fitting anatomic cementless femoral component in patients with femoral head osteonecrosis who are less than 30 years old

Young Hoo Kim, Jang Won Park, Jun Shik Kim

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Background: The studies on the short, metaphyseal-fitting anatomic cementless femoral component in patients younger than 30 years of age who had osteonecrosis of the femoral head are absent. The purpose of this current study was to evaluate midterm results of the short, metaphyseal-fitting anatomic cementless femoral component in patients younger than 30 years of age who had osteonecrosis of the femoral head with a particular emphasis on the clinical and radiographic results, thigh pain, stress shielding, revision rate, and osteolysis. Methods: We reviewed the 70 patients (111 hips) younger than 30 years of age who had osteonecrosis of the femoral head. All surgeries were performed by a single surgeon. The most common cause of osteonecrosis of the femoral head was ethanol-associated. Demographic data, Harris hip score, Western Ontario and McMaster Universities Osteoarthritis (WOMAC) index, and University of California, Los Angeles (UCLA), activity score were recorded. Radiographic evaluation was performed to determine implant fixation, stress shielding, and osteolysis. The minimum follow-up was 5 years (mean, 5.7 years; range, 5-6.5 years). Results: The mean preoperative Harris hip score, WOMAC score, and UCLA activity score were 35 points, 68 points, and 3 points, respectively. At final follow-up, the mean Harris hip score, WOMAC score, and UCLA activity score were 96 points, 17 points, and 8 points, respectively. No hip resulted in thigh pain after 1 year postoperatively. All of the acetabular and femoral components were well fixed at final follow-up. No hip exhibited squeaking, ceramic fracture, loosening, or osteolysis at the final follow-up. Conclusions: The midterm results of the short, metaphyseal-fitting anatomic cementless femoral component provided stable fixation without diaphyseal fixation in the highly active younger patients with osteonecrosis of the femoral head. Level of Evidence: Therapeutic level II. See the Instructions to Authors for a complete description of levels of evidence.

Original languageEnglish
Title of host publicationTotal Hip Arthroplasty
Subtitle of host publicationTribological Considerations and Clinical Consequences
PublisherSpringer-Verlag Berlin Heidelberg
Pages207-217
Number of pages11
ISBN (Electronic)9783642356537
ISBN (Print)3642356524, 9783642356520
DOIs
StatePublished - 1 Dec 2013

Bibliographical note

Publisher Copyright:
© 2013 EFORT. All rights are reserved.

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