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Postural Control Task Performance of Individuals with Femoroacetabular Impingement Syndrome

Miller, Meghan Maume
http://rave.ohiolink.edu/etdc/view?acc_num=osu149270133564983

Abstract Details

2017, Master of Science, Ohio State University, Allied Medicine.
Femoroacetabular impingement (FAI) is the leading cause of hip dysfunction in patients who are young and active. The single leg anterior reach (SLAR) is a common functional task clinically used to measure performance and dynamic postural control of the lower extremity. Kinetic analysis of this clinical task would provide further information regarding the postural control strategies of patients with FAI. Objective: To test the hypothesis that patients with FAI will exhibit decreased SLAR performance in the involved limb as compared to the uninvolved limb due to decreased postural control, exhibited by increased center of pressure excursion. Design: Cohort study. Settings: Movement analysis laboratory. Participants: Twenty-six patients clinically and radiographically diagnosed with FAI by a physician; 18 females (165.7 ± 8.2 cm, 66.5 ± 13.7 kg, 34.6 ± 6.8 y) and 8 males (176.6 ± 9.6 cm, 82.0 ± 12.4 kg, 37.5 ± 9.8 y). Interventions: Using a three-dimensional motion capture system and retro-reflective markers placed on the great toe of each foot, maximum SLAR distance was measured as the anterior-posterior distance between each marker at touch-down. Maximum distance was collected for three trials, averaged together, and normalized to limb length. Stance limb center of pressure (CoP) excursion was measured in the anterior-posterior (AP) and medial-lateral (ML) directions using a 40x60cm tri-axial force plate. Main Outcome Measures: Mean maximum reach distance was calculated by averaging the maximum value of the three trials for each limb. Center of pressure was calculated in the anterior-posterior and medial-lateral directions as well as total distance traveled throughout the task. Statistical differences between the involved and uninvolved limb were examined using a one-way ANOVA with an a-priori alpha level of 0.05. Results: A statistical difference with a moderate effect size (p < 0.001, d=0.328) was noted for mean normalized SLAR distance between the involved (63.1% ± 5.8%) and uninvolved (65.0% ± 5.8%) limbs, with a mean difference of 1.9%. No statistical difference in CoP excursion were noted between the involved and uninvolved limb for any direction (CoPML: p=0.879, CoPAP: p=0.895, CoPTot: p=0.881). Mean CoP excursions were: Involved - AP = 1.54 ± 0.69 m, ML = 1.12 ± .54 m, Total = 2.07 ± 0.95 m; Uninvolved - AP = 1.57 ± 0.76 m, ML = 1.14 ± 0.52 m, Total = 2.12 ± 0.98 m. Conclusions: Individuals with FAI demonstrate decreased SLAR performance between limbs despite similar CoP excursion values, suggesting postural control deficits are not the underlying cause of decreased reach performance. Limitations in range of motion or muscle strength associated with FAI may limit SLAR performance, but have little impact on dynamic postural control strategy.
James Onate (Advisor)
Mark Merrick (Committee Member)
46 p.
Sports Medicine
Femoroacetabular Impingement Syndrome; Postural Control Task Performance

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Citations

  • Miller, M. M. (2017). Postural Control Task Performance of Individuals with Femoroacetabular Impingement Syndrome [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu149270133564983

    APA Style (7th edition)

  • Miller, Meghan. Postural Control Task Performance of Individuals with Femoroacetabular Impingement Syndrome. 2017. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu149270133564983.

    MLA Style (8th edition)

  • Miller, Meghan. "Postural Control Task Performance of Individuals with Femoroacetabular Impingement Syndrome." Master's thesis, Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu149270133564983

    Chicago Manual of Style (17th edition)

osu149270133564983
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This open access ETD is published by The Ohio State University and OhioLINK.