Article

Female runners have a high incidence of developing patellofemoral
pain. Abnormal mechanics are thought to be an important contributing factor to
patellofemoral pain. However, the contribution of abnormal trunk, hip, and foot
mechanics to the development of patellofemoral pain within this cohort remains
elusive. Therefore the aim of this study was to determine if significant
differences during running exist in hip, trunk and foot kinematics between
females with and without patellofemoral pain. METHODS: 32 female runners (16
patellofemoral pain, 16 healthy control) participated in this study. All
individuals underwent an instrumented gait analysis. Between-group comparisons
were made for hip adduction, hip internal rotation, contra-lateral pelvic drop,
contra-lateral trunk lean, rearfoot eversion, tibial internal rotation, as well
as forefoot dorsiflexion and abduction FINDINGS: The patellofemoral pain group
had significantly greater peak hip adduction and hip internal rotation. No
differences in contra-lateral pelvic drop were found. A trend towards reduced
contra-lateral trunk lean was found in the patellofemoral pain group. No
significant differences were found in any of the rearfoot or forefoot variables
but significantly greater shank internal rotation was found in the patellofemoral
pain group. INTERPRETATION: We found greater hip adduction, hip internal rotation
and shank internal rotation in female runners with patellofemoral pain. We also
found less contra-lateral trunk lean in the patellofemoral pain group. This may
be a potential compensatory mechanism for the poor hip control seen.
Rehabilitation programs that correct abnormal hip and shank kinematics are
warranted in this population.
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Langue : ANGLAIS