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Summary <p>This study investigated the prevalence of osteoporosis and sarcopenia in patients with end-stage knee osteoarthritis (OA) undergoing total knee arthroplasty (TKA).</p> Methods <p>In this retrospective cohort study, all patients with end-stage knee OA who underwent TKA between April 2022 and May 2023 were included. Preoperative appendicular lean mass index and bone mineral density were measured using dual-energy X-ray absorptiometry.</p> Results <p>A total of 1755 patients (mean age, 73.5 ± 6.8&#xa0;years) underwent TKA, with women comprising the majority (1554 patients, 88.5%). The prevalence of osteoporosis and sarcopenia was significantly higher in women than in men. Osteoporosis affected 51.9% of women versus 21.4% of men, and sarcopenia affected 42.2% of women versus 36.3% of men. The prevalence of osteosarcopenia was more than twice as high in women (25.9%) as in men (11.4%).</p> Conclusion <p>Osteosarcopenia was present in 24.1% of patients with end-stage knee OA undergoing TKA, exceeding rates in the general population. The condition was particularly prevalent among elderly female patients.</p>

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Prevalence of osteosarcopenia in patients with end-stage knee OA who underwent total knee arthroplasty

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月31日

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  • Juneyoung Heo,
  • Su Chan Lee,
  • Ji Hyun Kim,
  • Chang Hyun Nam,
  • Dong Nyoung Lee,
  • Ji-Hoon Baek

摘要

Summary

This study investigated the prevalence of osteoporosis and sarcopenia in patients with end-stage knee osteoarthritis (OA) undergoing total knee arthroplasty (TKA).

Methods

In this retrospective cohort study, all patients with end-stage knee OA who underwent TKA between April 2022 and May 2023 were included. Preoperative appendicular lean mass index and bone mineral density were measured using dual-energy X-ray absorptiometry.

Results

A total of 1755 patients (mean age, 73.5 ± 6.8 years) underwent TKA, with women comprising the majority (1554 patients, 88.5%). The prevalence of osteoporosis and sarcopenia was significantly higher in women than in men. Osteoporosis affected 51.9% of women versus 21.4% of men, and sarcopenia affected 42.2% of women versus 36.3% of men. The prevalence of osteosarcopenia was more than twice as high in women (25.9%) as in men (11.4%).

Conclusion

Osteosarcopenia was present in 24.1% of patients with end-stage knee OA undergoing TKA, exceeding rates in the general population. The condition was particularly prevalent among elderly female patients.