Ely's Test for Rectus Femoris Spasticity Ely's Test assesses rectus femoris spasticity. With the patient prone, the examiner resists knee flexion. If the buttocks raise or a pelvic tilt appears, it is a positive test. Video via @open_michigan #Elys #Test #Rectus #Femoris #Spasticity #Hip #PhysicalExam #clinical #video #sports #msk #orthopedics