Investigation of the Frequency of Greater Trochanteric Pain Syndrome in Patients with Knee Osteoarthritis

Abstract Knee osteoarthritis (KOA) and greater trochanteric pain syndrome (GTPS) can co-exist and exacerbate each other’s symptoms. This study aimed to evaluate the frequency of GTPS and the relationship between GTPS and disability, quality of life (QoL) and structural abnormalities, such as varum and valgum, coxa vara and valga, and leg length discrepancy in patients with KOA. This cross-sectional study was conducted with 108 patients between November 2023 and May 2024. Knee, low back, and hip pain severity levels were evaluated using the Visual Analog Scale, KOA grade using the Kellgren-Lawrence (KL) classification, disability using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and QoL using the Short Form-36 (SF-36). 90,7% of the patients were women. The KL grade of KOA was 3 in nearly half of the patients. The frequency of genu varum was very high, at 62%. The frequency of unilateral GTPSwas 33%, and that of bilateral GTPS was 42.6%. The mean scale scores were 50.4±18 for the total WOMAC, 30±25 for the SF-36 general health component, and 48.6±16.0 for the SF-36 mental health component. The presence of genu varum (rho=0.213, p=0.027) and an increase in the KL grade of KOA (rho=0.370, p