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Effect of bracing on dynamic patellofemoral contact mechanics.

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  • معلومة اضافية
    • Author-Supplied Keywords:
      biomechanics
      Bracing
      contact pressure
      gait
      in vitro simulation
      knee
      orthotics
      patellofemoral mechanics
      patellofemoral pain
      pressure measurement
    • NAICS/Industry Codes:
      339110 Medical equipment and supplies manufacturing
      339112 Surgical and Medical Instrument Manufacturing
      417930 Professional machinery, equipment and supplies merchant wholesalers
      423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
      811219 Other Electronic and Precision Equipment Repair and Maintenance
      339113 Surgical Appliance and Supplies Manufacturing
    • Abstract:
      Decreases in patellofemoral pain have been demonstrated with bracing; however, the mechanisms of pain reduction remain unclear. Our purpose was to evaluate the hypothesis that patellofemoral bracing decreases peak pressure on the retropatellar surface through an increase in patellofemoral contact area. Nine cadaveric knees were tested during simulated free-speed walking with no brace, a knee sleeve, two different patellar stabilization sleeves, and a wrap-style patellar stabilization brace. Contact area and pressure were measured using a dynamic pressure sensor located in the patellofemoral joint. For the unbraced knee, contact area and peak pressure varied with knee flexion angle, ranging from 0.30 ± 0.3 cm2 and 1.80 ± 1.7 MPa at full extension to 2.28 ± 0.5 cm2 and 4.19 ± 1.7 MPa at peak knee flexion. All braces increased contact area, while the wrap-style brace decreased peak pressure (p < 0.001). Sleeve braces compress the quadriceps tendon causing the patella to engage the trochlear groove earlier during knee flexion. The wrap-style brace reduced peak pressure by shifting the location of highest pressure to a region with increased articular cartilage thickness. Sleeve braces may be useful for treatment of patellar subluxation disorders, while wrap-style braces may be effective for treatment of disorders associated with degenerative cartilage changes. [ABSTRACT FROM AUTHOR]
    • Abstract:
      Copyright of Journal of Rehabilitation Research & Development is the property of VA Prosthetics Research & Development Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
    • Author Affiliations:
      1Rehabilitation Institute of Chicago, Chicago, IL
      2Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL
      3Department of Orthopaedic Surgery, Northwestern University, Chicago, IL
      4Department of Biomedical Engineering, Northwestern University, Evanston, IL
    • ISSN:
      0748-7711
    • Accession Number:
      10.1682/JRRD.2009.12.0204
    • Accession Number:
      55577829
  • Citations
    • ABNT:
      WILSON, N. A. et al. Effect of bracing on dynamic patellofemoral contact mechanics. Journal of Rehabilitation Research & Development, [s. l.], v. 47, n. 6, p. 531–541, 2010. DOI 10.1682/JRRD.2009.12.0204. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=55577829&custid=s8280428. Acesso em: 12 jul. 2020.
    • AMA:
      Wilson NA, Mazahery BT, Koh JL, Li-Qun Zhang. Effect of bracing on dynamic patellofemoral contact mechanics. Journal of Rehabilitation Research & Development. 2010;47(6):531-541. doi:10.1682/JRRD.2009.12.0204.
    • AMA11:
      Wilson NA, Mazahery BT, Koh JL, Li-Qun Zhang. Effect of bracing on dynamic patellofemoral contact mechanics. Journal of Rehabilitation Research & Development. 2010;47(6):531-541. doi:10.1682/JRRD.2009.12.0204
    • APA:
      Wilson, N. A., Mazahery, B. T., Koh, J. L., & Li-Qun Zhang. (2010). Effect of bracing on dynamic patellofemoral contact mechanics. Journal of Rehabilitation Research & Development, 47(6), 531–541. https://doi.org/10.1682/JRRD.2009.12.0204
    • Chicago/Turabian: Author-Date:
      Wilson, Nicole A., B. Tom Mazahery, Jason L. Koh, and Li-Qun Zhang. 2010. “Effect of Bracing on Dynamic Patellofemoral Contact Mechanics.” Journal of Rehabilitation Research & Development 47 (6): 531–41. doi:10.1682/JRRD.2009.12.0204.
    • Harvard:
      Wilson, N. A. et al. (2010) ‘Effect of bracing on dynamic patellofemoral contact mechanics’, Journal of Rehabilitation Research & Development, 47(6), pp. 531–541. doi: 10.1682/JRRD.2009.12.0204.
    • Harvard: Australian:
      Wilson, NA, Mazahery, BT, Koh, JL & Li-Qun Zhang 2010, ‘Effect of bracing on dynamic patellofemoral contact mechanics’, Journal of Rehabilitation Research & Development, vol. 47, no. 6, pp. 531–541, viewed 12 July 2020, .
    • MLA:
      Wilson, Nicole A., et al. “Effect of Bracing on Dynamic Patellofemoral Contact Mechanics.” Journal of Rehabilitation Research & Development, vol. 47, no. 6, Sept. 2010, pp. 531–541. EBSCOhost, doi:10.1682/JRRD.2009.12.0204.
    • Chicago/Turabian: Humanities:
      Wilson, Nicole A., B. Tom Mazahery, Jason L. Koh, and Li-Qun Zhang. “Effect of Bracing on Dynamic Patellofemoral Contact Mechanics.” Journal of Rehabilitation Research & Development 47, no. 6 (September 2010): 531–41. doi:10.1682/JRRD.2009.12.0204.
    • Vancouver/ICMJE:
      Wilson NA, Mazahery BT, Koh JL, Li-Qun Zhang. Effect of bracing on dynamic patellofemoral contact mechanics. Journal of Rehabilitation Research & Development [Internet]. 2010 Sep [cited 2020 Jul 12];47(6):531–41. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=55577829&custid=s8280428