Joints
In the bones and structures page, we described the three bones that make up the shoulder joint; the clavicle, scapula, and humerus. While we commonly think of the "shoulder joint" as a single joint, it is actually made up of three different articulations.
1. The acromioclavicular joint is the articulation found between the acromion of the scapula and the clavicle.
2. The coracoclavicular joint is found between the coracoid process of the scapula and the clavicle.
3. The glenohumeral joint is found between the genoid fossa of the scapula and the humeral head of the humerus.
1. The acromioclavicular joint is the articulation found between the acromion of the scapula and the clavicle.
2. The coracoclavicular joint is found between the coracoid process of the scapula and the clavicle.
3. The glenohumeral joint is found between the genoid fossa of the scapula and the humeral head of the humerus.
Ligaments
A ligament is a band of fibrous connective tissue that joins two bones forming a joint. There are five main ligaments within the shoulder complex.
1. The coracoclavicular ligament connects the coracoid process of the scapula to the clavicle at the coracoclavicular joint. This ligament has two separate parts name for their shape. The conoid portion of the coracoclavicualr ligament is located medial to the trapezoid portion.
2. The acromioclavicular ligament connects the acromion of the scapula and the clavicle. This ligament the separation of the clavicle from the scapula while also preventing anterior and posterior displacement.
3. The Coracoacromial ligament is unique because it is a ligament that does not connect two separate bones. Rather, it connects two structures on the same bone. This ligament connects the acromion of the scapula and the coracoid process of the scapula and forms the arch over the shoulder.
4. The coracohumeral ligament connects the coracoid process of the scapula and the head of the humerous.
5. The glenohueral ligament connects the head of the humerous to the glenoid fossa. This ligament can be split into a superior, middle and inferior parts but all work to stop the humerus from translating anterior in the shoulder complex.
1. The coracoclavicular ligament connects the coracoid process of the scapula to the clavicle at the coracoclavicular joint. This ligament has two separate parts name for their shape. The conoid portion of the coracoclavicualr ligament is located medial to the trapezoid portion.
2. The acromioclavicular ligament connects the acromion of the scapula and the clavicle. This ligament the separation of the clavicle from the scapula while also preventing anterior and posterior displacement.
3. The Coracoacromial ligament is unique because it is a ligament that does not connect two separate bones. Rather, it connects two structures on the same bone. This ligament connects the acromion of the scapula and the coracoid process of the scapula and forms the arch over the shoulder.
4. The coracohumeral ligament connects the coracoid process of the scapula and the head of the humerous.
5. The glenohueral ligament connects the head of the humerous to the glenoid fossa. This ligament can be split into a superior, middle and inferior parts but all work to stop the humerus from translating anterior in the shoulder complex.