ArticleScientific reports2025
Low phase angle indicates poor muscle strength and physical performance in patients with knee osteoarthritis awaiting total knee arthroplasty.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Quadriceps muscle status after medial-pivot versus ultracongruent total knee arthroplasty using localized bioimpedance analysis: a randomized exploratory study.Arthroplasty (London, England) · 2026Article
- [Isokinetic analysis of muscle strength recovery after fixed-bearing unicompartmental knee arthroplasty in patients with anterior cruciate ligament deficiency].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2026Article
- Motor-Sparing Regional Analgesia in Frail and Sarcopenic Older Adults Undergoing Total Knee Arthroplasty: From Anatomy to Clinical Decision-Making-A Narrative Review.Journal of clinical medicine · 2026Review
- Longitudinal study on the relationship between extracellular water distribution changes and muscle mass in severe sarcopenia patients using multi-frequency bioelectrical impedance analysis combined with phase angle measurements.European geriatric medicine · 2026Article
- Functional quadriceps endurance, dynamic balance, and patient-reported recovery after total knee arthroplasty: a cross-sectional analysis of functional capacity and perceived disability.Frontiers in medicine · 2025Article
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8 authors.
Funding
Abstract
Total knee arthroplasty (TKA) is commonly considered to improve physical function in patients with knee osteoarthritis (OA). However, factors related to pre- and postoperative physical performance remain unclear. Therefore, this prospective cohort study aimed to evaluate the association between the phase angle (PhA) determined via bioelectrical impedance and physical status in patients with knee OA awaiting TKA. In total, 226 patients (age 72.6 years; 35 males; 112 bilateral symptoms) were divided into low and high PhA groups; between-group differences and changes over time were analyzed. The low PhA group (n = 62) had significantly lower muscle strength and physical performance than did the high PhA group (n = 164). Of the cohort, 63 (27.9%) patients completed the 3-month postoperative assessment. While physical performance significantly improved in both groups, the low PhA group still exhibited poorer physical performance (P < .005). Multivariable analysis identified a low PhA as an independent risk factor for the 10-meter walk (β = -0.215; 95% confidence interval [CI]: -0.291 to -0.140) and log-transformed timed up-and-go test performance (β = 0.218; 95% CI 0.140 to 0.296) after adjusting for baseline covariates. A low PhA could indicate poor pre- and postoperative physical status in patients with knee OA.
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