Learn about the shoulder joint , a synovial ball-and-socket joint that allows the most mobility of the human body. Find out its structure, spaces, capsule, bursae, muscles, ligaments, innervation and blood supply. The shoulder joint is the articulation between the thorax and the arm. This joint is one of the most complex and mobile joints of the body as it is comprised of four articulations, plus muscles, tendons, and ligaments connecting the upper limb to the axial skeleton. The shoulder joint , also known as the glenohumeral joint , is a ball-and-socket joint that involves the humerus (upper arm bone) and the scapula ( shoulder blade). It is one of the most mobile joints in the human body, allowing for a wide range of movements such as flexion, extension, abduction, adduction, rotation, and circumduction. Shoulder Joint Your shoulder joint (glenohumeral joint ) is a ball-and-socket joint that connects your upper arm bone (humerus) and shoulder blade (scapula). This lets you move and rotate your arms. It has the greatest range of motion of all the joints in your body.
