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Radiological subsidence and acetabular erosion after tapered uncemented hemiarthroplasty in femoral neck fractures: A 10- to 13- year follow-up study

Injury Feb 16, 2020

Rubio I, et al. - The clinical and radiological results of a tapered uncemented stem combined with a uni- or bipolar hemiarthroplasty were investigated following a minimum follow-up of 10 years. Among 135 patients [mean age: 81.5 years old (range, 70 to 90)] who underwent uncemented hip hemiarthroplasty after a displaced femoral neck fracture between 2004 and 2007, 38 patients underwent evaluation with a minimum follow-up of 10 years. Two early periprosthetic femoral fractures were identified. The survival rate of 85.4% for any cause was reported. For revision surgery on the acetabular side, the survival rate was 92.6% and on the femoral side was 97.6% at 10 years. Non-progressive radiological subsidence was identified in 14 hips and acetabular erosion was noted in 9 hips. A femoral canal filling < 80% and acetabular erosion to a cylindrical femur were correlated to stem subsidence. Outcomes suggest that a contemporary uncemented stem in hemiarthroplasty can lead to bone fixation in patients over 70 years old with a femoral neck fracture. After 10 years, acetabular erosion was frequently observed but with a low rate of revision surgery.
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