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Hip Abductor Weakness and Its Association With New or Worsened Knee Pain: Data From the Multicenter Osteoarthritis Study
Journal article   Open access   Peer reviewed

Hip Abductor Weakness and Its Association With New or Worsened Knee Pain: Data From the Multicenter Osteoarthritis Study

Cara L Lewis, Neil A Segal, Gabriela V Rabasa, Michael P LaValley, Glenn N Williams, Michael C Nevitt, Cora E Lewis, David T Felson and Joshua J Stefanik
Arthritis care & research (2010), v 75(11), pp 2328-2335
Nov 2023
PMID: 37221156
url
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10803067View

Abstract

Female Gait Humans Knee Knee Joint Male Muscle Strength Osteoarthritis, Knee - complications Osteoarthritis, Knee - diagnosis Osteoarthritis, Knee - epidemiology Pain - diagnosis Pain - epidemiology Pain - etiology
Hip abductors, important for controlling pelvic and femoral orientation during gait, may affect knee pain. Our objective was to evaluate the relation of hip abductor strength to worsened or new-onset frequent knee pain. Given previously noted associations of knee extensor strength with osteoarthritis in women, we performed sex-specific analyses. We used data from the Multicenter Osteoarthritis study. Hip abductor and knee extensor strength was measured. Knee pain was assessed using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire and a question about frequent knee pain at baseline (144-month visit), and 8, 16, and 24 months thereafter. Knee pain outcomes were worsened knee pain (2-point increase in WOMAC pain) and incident frequent knee pain (answering yes to the frequent knee pain question among those without frequent knee pain at baseline). Leg-specific analyses tested hip abductor strength as a risk factor for worsened and new frequent knee pain, adjusting for potential covariates. Additionally, we stratified by knee extensor strength (high versus low). Among women, compared to the highest quartile of hip abductor strength, the lowest quartile had 1.7 (95% confidence interval [95% CI] 1.1-2.6) times the odds of worsened knee pain; significant associations were limited to women with high knee extensor strength (odds ratio 2.0 [95% CI 1.1-3.5]). We found no relation of abductor strength to worsening knee pain in men or with incident frequent knee pain in men or women. Hip abductor weakness was associated with worsening knee pain in women with strong knee extensors, but not with incident frequent knee pain in men or women. Knee extensor strength may be necessary, but not sufficient, to prevent pain worsening.

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Collaboration types
Domestic collaboration
Web of Science research areas
Rheumatology
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