Ac Joint Anatomy

The acromioclavicular ac joint radiographic series is used to evaluate the acromioclavicular joint and the distal clavicle. Several ligaments surround this joint.

Ac Joint Separation Brisbane Knee And Shoulder Clinic Dr

Anatomical terminology edit on wikidata the acromioclavicular joint or ac joint is a joint at the top of the shoulder.

Ac joint anatomy. Indications ac radiographs are performed for a variety of indications including. The acromioclavicular joint is between the small facet of the convex distal clavicle and flat medial acromionthe articular surfaces are lined with fibrocartilage like the sternoclavicular joint it is an atypical synovial joint. The acromioclavicular joint is formed by the outer end of the clavicle collar bone and the acromion process of the scapular shoulder blade.

Unlike the shoulder joint the ac joint is small and has a limited range of motion and function. The acromioclavicular joint is located at the top of the shoulder where the acromion process and the clavicle meet to form a joint see the following image. The ac joint is located above the glenohumeral joint true shoulder joint.

The acromioclavicular joint ac joint is the articulation between the medial end of the acromion and the distal lateral end of the clavicle. Physicians must have a good understanding of the anatomy and mechanics of this joint before treating patients with ac joint pathology. The ac joint consists of an articulation between the lateral end of the clavicle and the acromion of the scapula.

It is the junction between the acromion part of the scapula that forms the highest point of the shoulder and the clavicle. Being a diarthrodial joint the ac joint is surrounded by a capsule and has an intraarticular synovium and an articular cartilage interface. Its distal or lateral end is flattened and it has prominent landmarks on its inferior surface.

A minor ac joint sprain may involve stretching only of this ligament. Shoulder trauma direct blows to th. As the name suggests it is the articulation of the acromion of the scapula with the clavicle.

The ac joint is formed by the junction of the lateral clavicle and the acromion process of the scapula and is a gliding or plane style synovial joint. The clavicle has been likened to a crank because of its double curve. Acromioclavicular joint motion the acromioclavicular joint is classified as a multiaxial synovial plane joint but it is more helpful to think of it as a pivot point.

The main ligament that joins the two bones is called the acromioclavicular ligament. The acromioclavicular joint or ac joint is one of four joints that compride the shoulder complex. The acromioclavicular ac joint is a frequent site of injuries and degenerative pathology.

Ac Separation

Anatomy Of Acromioclavicular Joint