What makes up the shoulder complex? (3 bones, 3 joints)
scapula, clavicle, and sternum and includes the sternoclavicular (SC), acromioclavicular (AC), and scapulothoracic joints.
The shoulder complex is made up of three bones and three joints, including:
1. Clavicle (collarbone): It is a long, S-shaped bone known for its stability and support in the shoulder joint.
2. Scapula (shoulder blade): It is a flat, triangular bone located at the back of the shoulder, responsible for attaching the muscles of the shoulder and arm.
3. Humerus (upper arm bone): It is a long bone that runs from the shoulder to the elbow, forming the ball and socket joint with the scapula.
The three joints of the shoulder complex are:
1. Sternoclavicular joint: It is the joint that connects the clavicle and sternum (breastbone), and is responsible for attaching the clavicle to the central skeleton.
2. Acromioclavicular joint: It is the joint that connects the clavicle and acromion (a bone of the scapula), and is responsible for supporting the shoulder complex.
3. Glenohumeral joint: It is the joint that forms between the head of the humerus and the shallow socket of the scapula, and is responsible for the shoulder’s wide range of motion.
More Answers:
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