Does wearing a prophylactic ankle brace during drop landings affect lower extremity kinematics and ground reaction forces?

The objective of the study was to determine if prophylactic ankle bracing worn by females during landings produces abnormal lower extremity mechanics. Angular kinematic and ground reaction force (GRF) data were obtained for 16 athletically experienced females who performed brace and no-brace drop la...

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Bibliographic Details
Published in:Journal of applied biomechanics 2013-04, Vol.29 (2), p.205-213
Main Authors: Simpson, Kathy J, Yom, Jae P, Fu, Yang-Chieh, Arnett, Scott W, O'Rourke, Sean, Brown, Cathleen N
Format: Article
Language:English
Subjects:
Ankle
Ankle Injuries - physiopathology
Ankle Injuries - prevention & control
Anthropometry
Biomechanical Phenomena
Braces
Female
Humans
Knee Injuries - physiopathology
Knee Injuries - prevention & control
Rotation
Sports - physiology
Surveys and Questionnaires
Young Adult
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Summary:The objective of the study was to determine if prophylactic ankle bracing worn by females during landings produces abnormal lower extremity mechanics. Angular kinematic and ground reaction force (GRF) data were obtained for 16 athletically experienced females who performed brace and no-brace drop landings. The brace condition displayed reduced in external rotation and flexion displacements about the ankle and knee joints and increased vertical and mediolateral GRF peak magnitudes and rate of vertical GRF application (paired t test, P < .05). The ankle and knee joints landed in a less plantar flexed and more flexed position, respectively. No significant ab adduction outcomes may have occurred due to interparticipant variability and or a lack of brace restriction. Conclusion: During typical landings, this lace-up brace increases vertical GRF, decreases ankle and knee joint displacements of flexion and int external rotation, but minimally affects ab adduction displacements.
ISSN:1065-8483
1543-2688
DOI:10.1123/jab.29.2.205