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Associates of Physical Function and Pain in Patients with Patellofemoral Pain Syndrome |
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| Authors: | Sara R. Piva G. Kelley Fitzgerald James J. Irrgang Julie M. Fritz Stephen Wisniewski Gerald T. McGinty John D. Childs Manuel A. Domenech Scott Jones Anthony Delitto |
| Affiliation: | a Department of Physical Therapy, University of Pittsburgh, Pittsburgh, PA b Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA c Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA d Department of Physical Therapy, University of Utah, Salt Lake City, UT e Physical Therapy Element of United States Air Force Academy, Colorado Springs, CO f Doctor Program of Physical Therapy, US Army-Baylor University, Fort Sam Houston, TX g Department of Rehabilitation Sciences, Texas Tech University Health Science Center, Odessa, TX h Ramstein Outpatient Physical Medicine Clinic, Ramstein Air Base, Kaiserslautern, Germany |
| Abstract: | Piva SR, Fitzgerald GK, Irrgang JJ, Fritz JM, Wisniewski S, McGinty GT, Childs JD, Domenech MA, Jones S, Delitto A. Associates of physical function and pain in patients with patellofemoral pain syndrome.ObjectivesTo explore whether impairment of muscle strength, soft tissue length, movement control, postural and biomechanic alterations, and psychologic factors are associated with physical function and pain in patients with patellofemoral pain syndrome (PFPS).DesignCross-sectional study.SettingRehabilitation outpatient.ParticipantsSeventy-four patients diagnosed with PFPS.InterventionsNot applicable.Main Outcome MeasuresMeasurements were self-reported function and pain; strength of quadriceps, hip abduction, and hip external rotation; length of hamstrings, quadriceps, plantar flexors, iliotibial band/tensor fasciae latae complex, and lateral retinaculum; foot pronation; Q-angle; tibial torsion; visual observation of quality of movement during a lateral step-down task; anxiety; and fear-avoidance beliefs.ResultsAfter controlling for age and sex, anxiety and fear-avoidance beliefs about work and physical activity were associated with function, while only fear-avoidance beliefs about work and physical activity were associated with pain.ConclusionsPsychologic factors were the only associates of function and pain in patients with PFPS. Factors related to physical impairments did not associate to function or pain. Our results should be validated in other samples of patients with PFPS. Further studies should determine the role of other psychologic factors, and how they relate to anxiety and fear-avoidance beliefs in these patients. |
| Keywords: | Anxiety Fear Pain Patella Quality of life Rehabilitation |
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