Shoulder Anatomy and Injuries

Clavicle

"collarbone". Attaches the upper limb to the trunk.

Coracoid process

-A hook-like projection, which lies just underneath the clavicle. -The short head of the biceps brachii and the pectoralis minor attach here, while the corocobrachialis muscle originates from this projection.

Subscapular fossa

-Anterior flat surface of the scapula -Attachment of the subscapularis muscle, one of the rotator cuff muscles.

Humerus

-Bone that forms the upper arm -Joins at the shoulder and the forearm

Glenoid Labrum

-Fibrous rim which deepens the glenoid fossa -Increases total surface contact area

Bursitis

-Found in overhead athletes -Swelling of the bursa between the clavicle and scapula

Clavicle Fractures

-Most common fracture in Sports

Impingement syndrome

-Typically chronic in nature -Found in overhead athletes -When there is impingement of tendons or bursa in the shoulder from bones of the shoulder.

Hill-Sachs Lesion

A posterolateral humeral head compression fracture, typically secondary to recurrent anterior shoulder dislocations,

Glenoid Fossa

A shallow cavity, which articulates with the humerus to form the glenohumeral joint.

Most common dislocation of glenohuneral joint?

Abduction and external rotation

Infraspinous fossa

Area below the spine of the scapula, it displays a convex shape. The infraspinatus muscle originates from this area.

Glenohumeral Joint

Joint in which the Humerus and Scapula articulate.

Acromion

Projection of the spine that arches over the glenohumeral joint and articulates with the clavicle.

Supraspinous fossa

The area above the spine of the scapula. The supraspinatus muscle originates from this area.

Scapula

Triangular flat bone that serves as the attachment for 17 muscles.