ArticleJournal of orthopaedics
Association of knee osteoarthritis grade with one-leg standing balance and quadriceps strength in male independent ambulators aged ≥80 years.
Article in Journal of orthopaedics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed, 5 citations in OpenAlex.
- Quadriceps Strength, Postural Stability, and Pain Mediation in Bilateral Knee Osteoarthritis: A Comparative Analysis with Healthy Controls.Diagnostics (Basel, Switzerland) · 2023Article
- Association between hip extensor muscle weakness and disability of activities of daily living in patients with early-stage knee osteoarthritis.Rheumatology international · 2020Article
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundOne-leg standing (OLS) balance is an important predictor of falls in people of advanced age. In this population, muscle weakness and knee osteoarthritis also contribute to falls and resultant fractures and thereby affect mortality rates. The Kellgren-Lawrence (KL) classification is widely used in the radiographic evaluation of knee osteoarthritis. This study was performed to evaluate OLS balance and the quadriceps strength (QS) for each KL grade and to clarify the impact of the knee osteoarthritis grade on OLS balance and QS. HYPOTHESIS: OLS balance shows results compatible with those of previous reports when independent walking is possible because of maintenance of QS regardless of the OA grade.
methodsThis single-center prospective cross-sectional study included data on 106 male orthopedic patients (106 knees) aged ≥80 years who could walk independently. OLS balance with eyes open was assessed using the patient's preferred leg. A handheld dynamometer was used to measure QS. The ratio of muscle strength to body weight (QS/BW ratio) was used to evaluate outcomes. Weight-bearing standing knee radiographs were evaluated using the KL classification. OLS balance and the QS/BW ratio were evaluated for each KL grade, and the correlations of the KL grade with OLS balance and the QS/BW ratio were assessed simultaneously.
resultsFor each KL grade, the number of participants (n), median OLS balance (seconds), and QS/BW ratio (N/kg) were as follows: grade I: 24, 12, and 4.9; grade II: 51, 14, and 5.2; grade III: 22, 14, and 4.9; and grade IV: 9, 26, and 5.7, respectively. There were no significant differences in either OLS balance or the QS/BW ratio among the four grades.
conclusionsParticipants exhibited good OLS balance and QS/BW ratio regardless of their KL grade. This study demonstrated an absence of correlations of the KL grade with OLS balance and the QS/BW ratio, as was previously reported for the KL grade and pain. LEVEL OF EVIDENCE: Level II prospective study.
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