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Shoulder Anatomy
The shoulder is one of the most sophisticated and complicated joints of the body: - It has the greatest range of motion of any joint in the body allowing complete global movement allowing you to position the hand anywhere in space.
- The coordinated activity of numerous muscles working together in set patterns is required to produce this motion
- It is made up of FOUR joints and FIVE linked bone groups which are related and work together.
- To allow so much movement the joints need to be 'free' to move, therefore the shoulder should be unstable; However a series of complex ligaments and muscle keep it in joint.
Because the shoulder is such a unique joint it is also prone to unique and complex problems. In fact it would be more correct to call it the SHOULDER COMPLEX.
This section will hopefully explain some of the terminology you might hear and relate this to disorders of the shoulder complex. Understanding how the different layers of the shoulder are built and connected can help you understand how the shoulder works and is affected by injury and overuse. The deepest layer includes the bones and the joints of the shoulder.
The next layer is made up of the ligaments of the joints.
The tendons and the muscles come next.
The nerves supply all the stuctures above and make them work.
A tough band of connective tissue that connects two bones to each other. "Ligament" is a fitting term; it comes from the Latin "ligare" meaning "to bind or tie."
a structure (tissue) that attaches a muscle to a bone. When a tendon becomes inflamed, the condition is referred to as tendinitis or tendonitis.
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