Radiographic evaluation of proximal femoral nutrient arteries after total hip arthroplasty with a short femoral stem
Journal of Arthroplasty Feb 13, 2021
Wynn MS, Carender CN, Solsrud E, et al. - The risk for periprosthetic fracture may increase in correlation with using less invasive approaches and broach only press-fit femoral stems in total hip arthroplasty (THA). As proximal femoral nutrient arteries (FNAs) can be mistaken for fractures after THA, researchers identify description of FNAs in relation to THA implants as important to better differentiate between FNAs and periprosthetic fractures. Researchers conducted a retrospective cohort study of patients ≥ 18 years undergoing primary THA with a cementless, broach-only stem in order to evaluate the frequency, location, and morphology of FNAs visible on radiographs after the procedure in these patients. Evaluation of a total of 378 hips was performed (332 patients). FNAs were recognized radiographically in 46% of patients following THA with one broach-only stem design. The FNA was unicortical and preoperative radiographs exhibited their presence. They recommend considering this when evaluating postoperative radiographs.
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