The Presence Of Sarcopenia In Patients With Knee Osteoarthritis

The ultrasonographic assesment will be used to examine the rectus femoris, gastrocnemius medailalis and rectus abdominis subcutaneous and muscle thickness. Additionally, fascicle length and pennation angle were measured between the two parallel aponeuroses of the gastrocnemius muscle (bulkiest part of medial head) in the longitudinal view when subjects were in prone position with their ankles at 90°.

The muscle masses of the patients were evaluated by measuring the fat mass (Fat Mass-FM), fat mass index (FMI), lean body mass (LBM) and skeletal muscle index (SMI) calculated by DEXA. Appendicular muscle mass (ASM) is calculated by summing the lean soft tissue of the two upper limbs and the two lower limbs. Skeletal muscle mass index is calculated by dividing the appendicular lean mass by the square of the neck height \[SMI = ASM / height2 (kg / m2)\].

Quadriceps-hamstring Peak Torque (PT) values and the ratio of PT values to body weight (PT / VA) (at 60 and 180 ° / sec speeds) were evaluated with an isokinetic dynamometer