Two terms that come up often when it comes to movement are flexion and extension ... the elbow to bring the forearm closer to the upper arm, making it an extension-focused movement.

Ball and socket joints also allow flexion and extension. Flexion of the shoulder joint occurs when the humerus (upper arm) moves forwards from the rest of the body, which happens at the end of an ...

Background Stiff landings with less knee flexion and high vertical ground reaction force have shown to be associated with increased risk of ACL injuries (Leppänen et al. 2016). The association between ...

Deltoid Abduction of the shoulder (moving the arm outwards and away from the body ... the arm towards the body); Shoulder horizontal flexion (moving the arms forwards in front of the body ...