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- W2801696305 abstract "Background: Prior investigations have shown a decrease in periprosthetic bone mineral density (BMD) of the calcar following total hip arthroplasty (THA). The purpose of this investigation was to study proximal femur BMD in a cohort of young, active patients following THA at 1 year postoperatively using a recently introduced stem design. Methods: This was a prospective, IRB-approved investigation of patients with an age <65 years, BMI <35 kg/m 2 , and presymptomatic UCLA score of >6 undergoing a primary THA for a diagnosis of osteoarthritis. All patients received a titanium, proximally coated, tapered cementless femoral stem (ACCOLADE II, Stryker Inc, Mahwah, NJ, USA). Dual energy X-ray absorptiometry scans were performed at 6 weeks, 6 months, and 1 year postoperatively. Bone density was analyzed for 7 traditional Gruen zones with BMD ratios calculated for change in BMD compared with the baseline. Results: 31 patients (mean age of 52.6 + 6.5 years, BMI of 27.9 + 3.9 kg/m 2 , and UCLA activity score of 7.3 + 1.9) were included. The mean BMD ratio decreased at the 6 months and 1 year interval in zones 1 and 2. However, the mean BMD ratio was maintained in Gruen zones 3 thru 7 with zone 7 (medial calcar) demonstrating 100% maintenance of the baseline BMD at 1 year. Conclusion: This study demonstrates the maintenance of medial calcar bone density at 1 year postoperatively in young, active patients undergoing THA. Further longitudinal analysis of this stem design is necessary to elucidate the significance of this finding." @default.
- W2801696305 created "2018-05-17" @default.
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- W2801696305 date "2018-05-04" @default.
- W2801696305 modified "2023-09-24" @default.
- W2801696305 title "An evaluation of proximal femur bone density in young, active patients undergoing total hip arthroplasty at one year postoperatively" @default.
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- W2801696305 doi "https://doi.org/10.1177/1120700018761152" @default.
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