Quadriceps femoris angle - Open and closed kinematic chain exercises

The Quadriceps (Q) angle is an important indicator of biomechanical function in the lower extremity. This measurement reflects the effect of the quadriceps mechanism on the knee.Measuring the Q angle provides useful information regarding the alignment of knee in frontal plane and its possible underlying pathology. Both Open and Closed kinematic chain exercises can influence patellar dynamics hence play a major role in maintaining normal Q angle.