Abduction – movement away from the midline of the body. This occurs at the hip and shoulder joints during a jumping jack movement. Adduction – movement towards the midline of the body.

Deltoid Abduction of the shoulder (moving the arm outwards and away from the body) Outward arm action in a jumping jack Rotator cuffs A group of stabilising muscles of the shoulder which helps to ...

Keywords anatomy, joints, fibrous joints, cartilaginous joints, synovial joints, movement, elbow, shoulder, hip, knee, ligaments, muscles Email us at [email protected] if you have questions ...

Each role is vital to proper arm function and can only occur when the anatomy around the shoulder is uncompromised. The presence of bony and soft tissue injury as well as muscle weakness and ...