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Published in: International Orthopaedics 5/2024

28-02-2024 | Osteonecrosis of the Femoral Head | Original Paper

What are the differences in the recovery of physical function and clinical score between patients with steroid-related osteonecrosis of the femoral head and hip osteoarthritis undergoing total hip arthroplasty? A propensity score–matched study

Authors: Ryota Hamada, Takumi Kawano, Masanobu Murao, Manabu Nankaku, Yaichiro Okuzu, Toshiyuki Kawai, Yutaka Kuroda, Ryosuke Ikeguchi, Shuichi Matsuda

Published in: International Orthopaedics | Issue 5/2024

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Abstract

Purpose

Steroid-related osteonecrosis of the femoral head (ONFH), arising from steroid administration for underlying diseases, represents a unique pathology for total hip arthroplasty (THA) and typically affects a younger demographic compared to osteoarthritis (OA). Given the significant age-related differences, this study aims to employ propensity score matching to align patient backgrounds between these two diseases and compare physical function. Additionally, our objective is to scrutinize the patterns of clinical score recovery over the course of one year following THA.

Methods

Using propensity score matching, 29 patients each with steroid-related ONFH and OA were selected. Muscle strength (hip abductor and knee extensor) were assessed before and after THA. Additionally, recovery of the Harris Hip Score (HHS) and Oxford Hip Score (OHS) up to one year postoperatively was analyzed.

Results

The steroid-related ONFH group exhibited gender bias and significantly younger age compared to the OA group. Propensity score matching achieved balanced patient backgrounds. Physical function showed trends of lower hip abduction and knee extensor strength on the operative side in the steroid-related ONFH group. Notably, nonoperative knee extensor strength decreased significantly after matching. HHS and OHS were poor in steroid-related ONFH up to three months postoperatively but recovered after six months.

Conclusions

Patients with steroid-related ONFH experience positive outcomes in clinical score following THA. Propensity score matching effectively identified muscle weakness on both operative and nonoperative sides, highlighting its utility in comparative analyses.
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Metadata
Title
What are the differences in the recovery of physical function and clinical score between patients with steroid-related osteonecrosis of the femoral head and hip osteoarthritis undergoing total hip arthroplasty? A propensity score–matched study
Authors
Ryota Hamada
Takumi Kawano
Masanobu Murao
Manabu Nankaku
Yaichiro Okuzu
Toshiyuki Kawai
Yutaka Kuroda
Ryosuke Ikeguchi
Shuichi Matsuda
Publication date
28-02-2024
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 5/2024
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-024-06128-1

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