study investigates the effectiveness of proximal control exercises for patients with PFPS in improving pain and function. The findings of this systematic review are consistent with previous evidence reporting effectiveness of exercise for PFPS. In particular, there is consistent moderate to high quality evidence (three RCT, one CCT, three cohort studies, and one case series) that proximal interventions provide relief of pain and improved function in the short term, whereas the knee programs have variable effectiveness. Physical therapists should consider using proximal interventions for early stage treatment for PFPS (Peters et al., 2013).

After 4 weeks of a combined knee and hip strengthening exercise program, sedentary females with PFPS had a greater reduction in pain during stair descent compared to the group who performed knee strengthening exercises only. Both groups also showed significant improvement in function and pain during stair ascent (Fakuda et al., 2010).

visual analogue scale 100-mm horizontal line anchored by word descriptors at each end by no the left and worst imaginable pain on the right

Kujala questionnaire is a 13-items knee specific self-report questionnaire. It documents response to six activities thought to be associated specifically with anterior knee pain syndrome (walking, running, jumping, climbing stairs, squatting, and sitting for prolonged periods with knees bent), as well as symptoms such as limp, inability to bear weight through the affected limb, swelling, abnormal patellar movement, muscle atrophy and limitation of knee flexion. This questionnaire was used to ssess the individual's functional status and PFPS experienced during specific functional tasks.

2D frontal plane projection angle (FPPA) analysis to measure dynamic knee valgus. for 2D FPPA analysis, the centers of each of hip, knee and ankle joints will be determined using a standard tape measure, markers will be placed at the midpoint of the ankle malleoli for the center of the ankle joint, midpoint of the femoral condyles to approximate the center of the knee joint, and on the proximal thigh at the midpoint of the line from the anterior superior iliac spine to the knee joint center.

Hand held dynamometer will be used to asses isomteric hip abductor and isometric hip external rotator power