Laser Acupuncture on Pain, Range of Motion and Function in Patients With Patellofemoral Pain Syndrome

Laser acupuncture will be used in this study with energy of 4 J per point for 80 s, with a total dosage of 24 J in each session, 2 times /week for 4 weeks

exercise program consisted of stretching for hamstring, gastrocnemius and iliotibial band, and strengthening exercises, which include isometric quadriceps exercises, straight leg raising, lateral straight leg raise, isometric hip adduction and squat to 30° knee flexion, 2 times /week for 4 weeks

Participants will receive laser acupuncture while the device is turned off.