The validity of two-dimensional measurement of trunk angle during dynamic tasks.

Authors: DiCesare CA, Bates NA, Myer GD, Hewett TE

Injury screening methods that use three-dimensional (3D) motion analysis accurately predict the risk of injuries, yet are expensive. There is great need for valid, cost-effective techniques that can be used in large-scale assessments. Utilizing two-dimensional (2D) measures of lateral trunk motion may identify athletes at risk for lower extremity injury. The purpose of this research was to determine the strength of the relationships between 2D and 3D calculations of lateral trunk angles for female athletes performing a single-leg cross drop landing. The authors concluded that given the recent focus on the role of the trunk in lower extremity injury, using the 2D a specific measurement (LTA4) assessment from this research may expand existing assessments into a composite model that can more accurately assess female athletes at risk for injury than models that do not include trunk analysis. Existing models that enable clinicians to effectively identify female athletes at risk for lower extremity injury may be enhanced by including accurate assessments of lateral trunk motion.

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