Comparison of Early Hip Strengthening to Early Quadriceps Strengthening in the Treatment of Females With Patellofemoral Pain
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Patellofemoral Pain Syndrome
- Sponsor
- Timothy Uhl
- Enrollment
- 33
- Locations
- 1
- Primary Endpoint
- Subjective Function by Lower Extremity Functional Scale Report Form
- Status
- Completed
- Last Updated
- 9 years ago
Overview
Brief Summary
Patellofemoral pain syndrome (PFPS) is a common knee disorder affecting physically active people. Despite the growing base of support for the early introduction of hip strengthening exercises into the rehabilitation of PFPS, there have been few randomized clinical trials comparing isolated hip to isolated quadriceps strengthening. The purpose of this study is to determine how different exercises affect pain, strength, muscle activity, and function in female subjects with patellofemoral pain. The researchers hypothesize that females diagnosed with PFPS who initially participate in a hip strengthening program will report a greater perceived level of function, greater strength, less pain, and improved neuromuscular activity than those who participate in a progressive quadriceps strengthening intervention.
Detailed Description
Methods: Thirty-three females with PFPS will perform either initial hip strengthening (hip group) or initial quadriceps strengthening (quad group) for 4 weeks, prior to 4 weeks of a similar program of functional weight-bearing exercises. Self-reported pain, function, and functional strength were measured. Isometric strength was assessed for hip abductors, external rotators, and knee extensors. A mixed-model analysis of variance will be used to determine group differences over time.
Investigators
Timothy Uhl
Professor
University of Kentucky
Eligibility Criteria
Inclusion Criteria
- •anterior or retropatellar knee pain reported during at least 2 of the following activities: ascending and descending stairs, hopping and running, squatting, kneeling, and prolonged sitting
- •insidious onset of symptoms not related to trauma
- •pain with compression of the patella
- •pain on palpation of the patellar facets
Exclusion Criteria
- •symptoms present for less than one month
- •clinical evidence of other knee pathology
- •history of recent knee surgery within past one year
- •history of patellar dislocations or subluxations
- •current significant injury affecting other lower extremity joints
Outcomes
Primary Outcomes
Subjective Function by Lower Extremity Functional Scale Report Form
Time Frame: Baseline, Mid-Intervention, and Post-Intervention
Visual Analog Pain Scale (Describing Worst Pain Felt During the Past Week)
Time Frame: weekly
0 to 10 cm line with 0 representing no pain and 10 representing severe pain
Visual Analog Pain Scale
Time Frame: 8 week
Visual analog pain scale at end of intervention. 0 to 10 cm line with 0 representing no pain and 10 representing severe pain
Secondary Outcomes
- Strength by Isometric Dynamometer(Baseline, Mid, and Post-Intervention)
- Neuromuscular Activity by Surface Electromyographical Amplitude During Stair Descent(Baseline, Mid and Post-Intervention)
- Hip Abduction Strength(8 week)
- Objective Function by Step-down Task for 30 Seconds(Baseline, Mid, and Post-Intervention)