Prevalence of and Factors Associated With Sarcopenia Among Older Adults With Knee Osteoarthritis

Objective: To determine the prevalence of sarcopenia in knee osteoarthritis (SKOA) and associated factors among age, gender, body mass index (BMI), nutritional status, knee pain score, knee pain duration, physical activity, and exercise frequency. Methods: Knee osteoarthritis (OA) and sarcopenia were diagnosed using American College of Rheumatology and Asian Working Group for Sarcopenia criteria, respectively. Results: Prevalence of SKOA using grip strength and quadriceps strength was 2.2% and 9.4%, respectively. There was no significant association between sarcopenia and knee OA. Low BMI and poor nutritional status were significantly associated with SKOA. Conclusions: No association between sarcopenia and knee OA was found in this study.