Anatomy of the Shoulder
At the simplest level, the shoulder is a ball and socket joint.  The  upper part of the humerus (ball) fits into the socket portion of the scapula called the glenoid.

The shoulder is made up of three bones: the scapula (shoulder blade), the humerus (upper arm bone) and the clavicle (collarbone). The part of the scapula that makes up the roof of the shoulder is called the acromion.

The rotator cuff is responsible for the motion, stability, and power of the humerus.

The joint where the acromion and the clavicle join together is known as the acromioclavicular (AC) joint. There are ligaments that provide stability to this joint. The true shoulder joint is called the glenohumeral joint and consists humeral head and the glenoid. The rotator cuff muscles and their tendons play an important role in the correct functioning of this joint.

Common Problems
► rotator cuff impingement and tendonitis
► rotator cuff tears
► dislocation/subluxation
► arthritis
► labral tears
► biceps tendonitis
► AC joint strain
► fractures
 

If you're experiencing pain, discomfort or have any questions about your shoulder please call  1-925-939-8585 8:00 AM–5:00 PM, Monday through Thursday, 8:00 AM–4:00 PM Friday..