Assessment of Knee Flexor Muscles Strength in Patients With Patellar Instability

Each patient underwent an isokinetic examination on Biodex System 3 (Biodex Multi-Joint System - Pro, Biodex Medical Systems, Inc. New York, USA). In the study group, both side hamstring muscle were evaluated at the velocities of 60 and180 deg/s for the following parameters: peak torque (PT), torque in 30 degree of the knee flexion (T 30 deg.), angle of peak torque (APT) and peak torque hamstring to quadriceps ratio (H/Q ratio).