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Study cites factors correlated with higher risk for periprosthetic femur fracture following THA
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Women, patients with a BMI greater than 40, those with a small Dorr ratio or small implant size had a high chance for periprosthetic femur fracture after total hip arthroplasty performed with a direct anterior approach, according to study results.
Researchers retrospectively evaluated patients who underwent a total of 500 primary total hip arthroplasties performed with cementless femoral implants using a direct anterior approach. The procedures were performed on a fracture table. Investigators assessed characteristics linked with perioperative prosthetic femur fractures that occurred within the first 3 months postoperatively. Data recorded included patient age, weight, gender, side, and implant type and size.
Results showed fractures occurred in 23 hips. Of these, 13 were intraoperative fractures and 10 were postoperative fractures. With bivariate analysis, investigators found women and patients with a BMI greater than 40 had greater chances of postoperative fractures and fractures overall. Compared with patients who did not sustain a fracture, patients with intraoperative fractures showed a significant difference regarding the Dorr ratio and patients with postoperative fractures were significantly different with regard to the implant size.
According to results from multivariate regression analysis, a BMI of greater than 40 increased the risk for postoperative fractures. There was a decrease in the chance for intraoperative fractures as the Dorr ratio and implant size increased. ‒ by Monica Jaramillo
Disclosures: Hartford reports he is a paid consultant and paid presenter or speaker for Zimmer Biomet. Please see the full study for a list of all other authors’ relevant financial disclosures.
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