Immediate effects of a knee brace with a constraint to knee extension on knee kinematics and ground reaction forces in a stop-jump task.

Published

Journal Article

BACKGROUND: A small knee flexion angle in landing tasks was identified as a possible risk factor for noncontact anterior cruciate ligament injuries that are common in sports. HYPOTHESIS: A specially designed knee brace with a constraint to knee extension would significantly increase the knee flexion angle at the landing of athletic tasks preceded with horizontal movement components, such as stop-jump tasks. STUDY DESIGN: Repeated measure design for brace effects. METHODS: Three-dimensional videographic and force plate data were collected for 10 male and 10 female recreational athletes performing a stop-jump task with and without the specially designed brace. Knee flexion angle at landing, maximum knee flexion angle, and peak ground reaction forces during the stance phase of the stop-jump task were determined for each subject with and without the knee brace. RESULTS: The knee brace decreased the knee flexion angle at the landing by 5 degrees for both genders but did not significantly affect the peak ground reaction forces during the landing. CONCLUSIONS: The specially designed knee brace may be a useful device in the prevention and rehabilitation of noncontact anterior cruciate ligament injuries in sports.

Full Text

Cited Authors

  • Yu, B; Herman, D; Preston, J; Lu, W; Kirkendall, DT; Garrett, WE

Published Date

  • July 1, 2004

Published In

Volume / Issue

  • 32 / 5

Start / End Page

  • 1136 - 1143

PubMed ID

  • 15262634

Pubmed Central ID

  • 15262634

Electronic International Standard Serial Number (EISSN)

  • 1552-3365

International Standard Serial Number (ISSN)

  • 0363-5465

Digital Object Identifier (DOI)

  • 10.1177/0363546503262204

Language

  • eng