Abstract
Purpose
The purpose of this study was to investigate the outcomes of using cementless femoral stem for extensive osteonecrosis of the femoral head involving the proximal femur.
Methods
A total of 21 patients (27 hips) in the study group defined as extensive ONFH involving proximal femur and 42 patients (52 hips) with the diagnosis of regular osteonecrosis of the femoral head in the control group were enrolled in the study. Clinical and radiographic follow-ups were documented at three, six, 12 and 24 months postoperatively.
Results
Results improved for Harris hip score in both groups. In the study group undersized stem implantation and lateralized mal-position were identified. Subsequent subsidence was also found.
Conclusions
Pre-operative templating and intra-operative X-ray confirmation are necessary to avoid complications.
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The authors declare that they have no conflict of interest.
Ethical approval
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This is a retrospective study. For this type of study formal consent is not required.
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Gao, YH., Li, SQ., Wang, YF. et al. Arthroplasty in patients with extensive femoral head avascular necrosis. International Orthopaedics (SICOT) 39, 1507–1511 (2015). https://doi.org/10.1007/s00264-015-2693-y
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DOI: https://doi.org/10.1007/s00264-015-2693-y