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 underarm throw or bowl in rounders. Flexion of the hip ...

3D kinematic of the upper right limb and trunk was recorded with an optoelectronic system. Glenohumeral joint was set as the centre of an imaginary sphere intersected by the distal end of the humerus.