SỬ DỤNG SIÊU ÂM CƠ TRONG CHẨN ĐOÁN SARCOPENIA Ở BỆNH NHÂN THOÁI HÓA KHỚP GỐI NGUYÊN PHÁT

Abstract

Objective: 1.To determine the correlation between muscle ultrasound and appendicular skeletal muscle mass (ASM) measured by DXA. 2.To establish a cut-off value for muscle ultrasound parameters to screen for sarcopenia in primary knee osteoarthritis patients. Methods: A cross-sectional study was conducted at Bach Mai Hospital involving 80 primary knee osteoarthritis patients: 60 with sarcopenia (case group) and 20 without (control group), diagnosed based on the 2019 AWGS criteria. Muscle ultrasound was performed on the rectus femoris (RF) and gastrocnemius medialis (GC) muscles bilaterally. Results: All muscle ultrasound parameters showed a significant correlation with ASM. Multivariate linear regression analysis revealed that age, RF cross-sectional area, GC fascicle length, and GC pennation angle were associated with ASM. The cut-off values for muscle ultrasound parameters to predict sarcopenia were: RF cross-sectional area: 3.63 cm² (AUC=0.87), GC fascicle length: 21.6 mm (AUC: 0.86), and GC pennation angle: 26.1 degrees (AUC: 0.94). Conclusion: Rectus femoris cross-sectional area, gastrocnemius medialis fascicle length, and pennation angle can be used to screen for sarcopenia in knee osteoarthritis patients.