@article{ref1,
title="Video Analysis of Trunk and Knee Motion during Non-Contact ACL injury in Female Athletes: Lateral Trunk and Knee Abduction Motion are Combined Components of the Injury Mechanism",
journal="British journal of sports medicine",
year="2009",
author="Hewett, Timothy E. and Torg, Joseph S. and Boden, Barry P.",
volume="43",
number="6",
pages="417-422",
abstract="BACKGROUND: The combined positioning of the trunk and knee in the coronal and sagittal planes during non-contact anterior cruciate ligament (ACL) injury has not been previously reported. Hypothesis: During ACL injury female athletes demonstrate greater lateral trunk and knee abduction angles than ACL-injured male athletes and uninjured female athletes. STUDY DESIGN: Cross-section control-cohort design. METHODS: Analyses of still captures from 23 coronal (10 female and 7 male ACL injured players and 6 female controls or 28 sagittal plane videos performing similar landing and cutting tasks. Significance was set at P</= 0.05. RESULTS: Lateral trunk and knee abduction angles were higher in female compared to male athletes during ACL injury (P</=0.05) and trended toward being greater than female controls (p=0.16, 0.13, respectively). Female ACL-injured athletes showed less forward trunk lean than female controls (I.C.:1.6+/-9.3 degrees vs. 14.0+/-7.3 degrees , P</=0.01). CONCLUSION: Female athletes landed with greater lateral trunk motion and knee abduction during ACL injury than did male athletes or control females during similar landing and cutting tasks. Clinical relevance: Lateral trunk and knee abduction motion are important components of the ACL injury mechanism in female athletes as observed from video evidence of ACL injury.<p /> <p>Language: en</p>",
language="en",
issn="0306-3674",
doi="10.1136/bjsm.2009.059162",
url="http://dx.doi.org/10.1136/bjsm.2009.059162"
}