Motion (physics)

Knee flexion

Athletes

Engineering

Movement assessment

Motor skill

Functional movement

Psychiatry

Developmental psychology

Computer science

Acoustics

Classical mechanics

Motion capture

Mechanical engineering

Physics

Movement (music)

Internal rotation

Psychology

Physical therapy

Artificial intelligence

Orthodontics

Kinematics

Medicine

Physical medicine and rehabilitation

Physical Therapy in Sport

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%). Cross-sectional study. Laboratory. Forty-one participants (soccer, rugby, netball, and cricket). 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%). 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). 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.

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