The cutting movement assessment score (CMAS): A cumulative screening tool to identify athletes with high-risk movement mechanics during cutting

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Thomas Dos'Santos

Side-step cutting is associated with non-contact anterior cruciate ligament (ACL) injuries due to the propensity to generate high multiplanar knee joint loads (knee abduction [KAM], flexion [KFM], and internal rotation [KIRM] moments) which increases ACL strain. Screening movement quality and identifying abnormal movement patterns can provide important information regarding an athlete’s potential ‘injury-risk’. These abnormal deficits include knee valgus, lateral trunk flexion, extended knee postures, wide lateral foot-plant distances, and hip internal rotation which contribute to greater knee joint loads. Although three-dimensional (3D) motion analysis is the ‘gold standard’ for evaluating movement mechanics, this method is expensive, time-consuming, and difficult to implement in the field. Practitioners require a field-based screening tool. The aim of this study was to explore the relationship between cutting movement assessment score (CMAS – a qualitative screening tool) and peak KAMs via 3D motion analysis, and compare cutting mechanics between CMAS trials classed as high (CMAS = 7) and low (CMAS = 3).