A qualitative screening tool to identify athletes with ‘high-risk’
movement mechanics during cutting : the cutting movement
assessment score (CMAS)

Dos'Santos, T; McBurnie, A; Donelon, T; Jones, C; Comfort, P; Jones, PA

Abstract

Objective

To assess the validity of the cutting movement assessment score (CMAS) to estimate the magnitude of peak knee abduction moments (KAM) against three-dimensional (3D) motion analysis, while comparing whole-body kinetics and kinematics between subjects of low (bottom 33%) and high CMASs (top 33%).
Design

Cross-sectional study.
Setting

Laboratory.
Participants

Forty-one participants (soccer, rugby, netball, and cricket).
Main outcome measures

Association between peak KAM and CMAS during a 90° cut. Comparison of 3D whole-body kinetics and kinematics between subjects with low (bottom 33%) and high CMASs (top 33%).
Results

A very large significant relationship (ρ = 0.796, p < 0.001) between CMAS and peak KAM was observed. Subjects with higher CMASs displayed higher-risk cutting postures, including greater peak knee abduction angles, internal foot progression angles, and lateral foot plant distances (p ≤ 0.032, effect size = 0.83–1.64). Additionally, greater cutting multiplanar knee joint loads (knee flexion, internal rotation, and abduction moments) were demonstrated by subjects with higher CMASs compared to lower (p ≤ 0.047, effect size = 0.77–2.24).
Conclusion

The CMAS is a valid qualitative screening tool for evaluating cutting movement quality and is therefore a potential method to identify athletes who generate high KAMs and “high-risk” side-step cutting mechanics.

• Journal Article Type: Article
• Acceptance Date: May 20, 2019
• Online Publication Date: May 23, 2019
• Publication Date: Jul 1, 2019
• Deposit Date: Aug 15, 2019
• Publicly Available Date: Aug 15, 2019
• Journal: Physical Therapy in Sport
• Print ISSN: 1466-853X
• Publisher: Elsevier
• Volume: 38
• Pages: 152-161
• DOI: https://doi.org/10.1016/j.ptsp.2019.05.004
• Publisher URL: https://doi.org/10.1016/j.ptsp.2019.05.004
• Related Public URLs: https://www.sciencedirect.com/journal/physical-therapy-in-sport