Journal
JOURNAL OF SPORT REHABILITATION
Volume 18, Issue 1, Pages 76-90Publisher
HUMAN KINETICS PUBL INC
DOI: 10.1123/jsr.18.1.76
Keywords
anterior knee pain; kinematics; kinetics; hip; patella
Categories
Funding
- Foundation for Physical Therapy
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Context: Lower extremity (LE) weakness might be associated with altered mechanics during weight bearing in subjects with patellofemoral Pain syndrome (PFPS). Objective: To analyze LE strength, mechanics, and the association between these variables among women with and without PFPS during a simulated athletic task. Design: Case control. Setting: Motion-analysis laboratory. Subjects: 20 women with PFPS and 20 healthy women. Main Outcome Measures: Peak isometric lateral trunk-flexion, hip-abduction, hip external-rotation, knee-flexion, and knee-extension strength, as, well as hip- and knee-joint excursions and angular impulses during single-leg jumps. Results: PFPS subjects produced less hip-abduction, hip external-rotation, and trunk lateral-flexion force than the control group. The PFPS group also demonstrated greater hip-adduction excursion and hip-abduction impulses. The association between the strength Measurements and LE mechanics was low. Conclusions: Women with PFPS demonstrate specific weaknesses and altered LE mechanics. Weakness is not, however, highly correlated with observed differences in mechanics.
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