Influence of knee osteoarthritis and aging on isokinetic muscle strength of the lower limbs in women

摘要

Aging is a multifactorial process that results in changes in the skeletal muscle then leads to decreased levels of muscle strength. Knee osteoarthritis (OA) is one of the most predominant causes of pain, functional decline and disability in the elderly population worldwide. In China the prevalence of radiographic knee OA was 42.8% in older women and 21.5% in older men. It has been shown to affect a multitude of Isokinetic muscle strength parameters. This study sought to investigate the different impacts of knee osteoarthritis and aging on isokinetic muscle strength of the lower limbs in women. We found that knee osteoarthritis might have a further bad influence on knee and hip joint of elderly women and they also had a significantly higher flexor-to-extensor moment ratios (f/e) than older controls. Reduced muscular strength emerge as a result of aging, isokinetic muscle strength decrease of lower limbs in KOA patients are more pronounced compared to older controls, especially in knee.