ArticleInternational orthopaedics2026
Comparable clinical outcomes but increased technical difficulty after total hip arthroplasty following curved intertrochanteric varus osteotomy.
Article in International orthopaedics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Navigation-assisted curved intertrochanteric varus osteotomy for osteonecrosis of the femoral head.International orthopaedics · 2026Article
- Postoperative computed tomography-based intact ratio predicts femoral head collapse after curved intertrochanteric varus osteotomy for osteonecrosis of the femoral head.International orthopaedics · 2026Article
- Japanese Orthopaedic Association and Societe Internationale de Chirugie Orthopedique et Tramatologie: Celebrating one hundred years of friendship and scientific exchange.International orthopaedics · 2026Article
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Authors and funding
6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundTotal hip arthroplasty (THA) is technically challenging after curved intertrochanteric varus osteotomy (CVO) for osteonecrosis of the femoral head (ONFH) due to altered proximal femoral morphology, which might compromise clinical outcomes, implant alignment, and accurate leg length restoration. In this study, we aimed to compare the clinical outcomes and radiographic findings among patients undergoing THA after CVO and primary THA for ONFH.
methodsThis retrospective case-control study included 28 hips that underwent THA after CVO (CVO group) and 56 propensity score-matched primary THA cases for ONFH (primary group). The clinical outcomes were assessed by the Harris Hip Score (HHS), complication rates, and implant survivorship. The radiographic parameters included cup inclination and anteversion, stem alignment, and postoperative leg length discrepancy (LLD).
resultsThe CVO group showed longer operative time and greater blood loss than did the primary group (p < 0.01). However, no statistically significant differences were found in HHS, complication rates, or implant survival. The CVO group showed a higher rate of stem malalignment (25.0% vs. 12.5%, p < 0.01) and greater LLD (6.1 ± 5.2 mm vs. 2.8 ± 3.3 mm, p < 0.01). In the CVO group, cemented stems demonstrated significantly lower malalignment rates (10.5% vs. 66.7%, p < 0.01) and smaller LLD (3.8 ± 4.4 mm vs. 11.0 ± 3.2 mm, p < 0.01) than cementless stems.
conclusionsTHA after CVO provided clinical outcomes and survival rates comparable to those of primary THA for ONFH. However, altered femoral morphology increased the risk of stem malalignment and LLD. Cemented stems might improve implant alignment and leg length restoration in these challenging cases.
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