The study aims to explore the effect of body position (side-lying versus standing) on hip abductors muscle strength and activation in individuals with and without PFPS and then to compare these measures between the two groups in each position
Age 18-35 years; Normal BMI; Subjects in the PFPS group diagnosed with unilateral PFPS by an orthopedist; Healthy individuals without knee pain (for the control group)
History of lower limb surgery; Any neurological disorders; Musculoskeletal disorders affecting the lower limb; Additional sources of anterior knee pain (tendonitis, Osgood-Schlatter, bursitis, etc.); Any inflammatory diseases
44 subjects, divided into 22 subjects with PFPS and 22 healthy controls, recruited from the outpatient clinics and staff/students of Ahram Canadian University
Case-control
Cross-sectional
Not listed
Muscle activity (%MVC) of the gluteus medius, gluteus maximus, and tensor fascia lata
using SEMG
Peak torque (Nm) of hip abductors muscles
using isokinetic
Maximal total work (J) during concentric and eccentric contractions
Using Isokinetic
The Arabic Version of the Kujala Score (Anterior Knee Pain Scale)
A questionnaire
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