Patellofemoral pain syndrome is one of the most common young adult female complaints, caused by changes in the patellofemoral joint's physical and biomechanical properties. This study compared the Short-term effects of patellar taping combined with isometric contraction of quadriceps muscle strengthening at 900 or 600 knee angles on quadriceps strength and functional performance in a female patient with patello-femoral pain syndrome (PFPS)

Quadriceps muscle strength Pain intensity Knee function

Inclusion Criteria:

• knee pain for at least eight weeks that was aggravated by activities such as descending and ascending stairs, squatting, and running.
• knee pain with a positive J sign (lateral tilt of patella)
• more symptomatic and mal align knee included in case of bilateral involvement and a sign of patellar malalignment on the radiograph.

Exclusion Criteria:

• History of knee fracture
• Patella dislocation
• knee deformity (e.g., genu varum)
• Knee Flexion contracture
• Ligament/meniscal injuries,
• NSAID or intra-articular injection, or knee Osteo arthritis.

single (participant)