Inclusion Criteria:  Pain felt anterior to knee joint. Pain felt retro-patellar. Pain felt during rest and increased with activities like prolonged sitting, squatting, running, and stair climbing. Insidious onset lasting for more than 6 weeks. Without any traumatic incidence. Not participating in a physical therapy program for the past three months.  Exclusion Criteria:  If they had a meniscal tear. Cruciate/collateral ligaments involvement. Knee osteoarthritis. Rheumatoid arthritis. A history of knee or hip surgery. Patellar dislocation/subluxation. Traction apophysitis encompassing the patellofemoral complex. Any pathology in the patellar tendon. Spinal referred pain.