Shoulder, in anatomy, the joint between the arm, or forelimb, and the trunk, together with the adjacent tissue, particularly the tissue over the shoulder blade, or scapula.
The omni-directional shoulder is the most mobile and the most versatile of the human joints. The shoulder, in conjunction with the elbow joint and the ulnar and radial bones of the forearm, may be operated to create a powerful lever to perform lifting or prying movements.
