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The shoulder is the most flexible joint in the body, enabling a wide range of movements. As a result, the shoulder joint is considered the most insecure joint of the body. The support of ligaments, muscles and tendons function to provide the required stability.

The end of the upper arm bone (humerus) forms the ball of the shoulder joint. An irregular shallow cavity in the scapula called the glenoid cavity forms the socket for the head of the humerus to fit in. The two bones together form the glenohumeral joint, which is the main joint of the shoulder.

Extra stability to the glenohumeral joint is provided by the glenoid labrum, a ring of fibrous cartilage that surrounds the glenoid cavity. The glenoid labrum increases the depth and surface area of the glenoid cavity to provide a more secure fit for the half-spherical head of the humerus.

These bones are held together by fibrous connective tissue called ligaments which are the main source of stability for the shoulder. Ligaments are not particularly flexible. Once stretched, they tend to stay stretched causing laxity in the joint. Small tears often occur, making the tissue susceptible to tears.

Tendons are elastic, soft, connective tissue structures that attach muscles to bone. The rotator cuff tendons are a group of tendons that connect the deepest layer of muscles to the humerus. The rotator cuff muscles and tendons control our ability to raise the arm from our side (abduction). Tear of this tissue often results from traumatic injury or overuse and generally requires treatment for complete healing.

About Regenerative Orthopedics
Regenerative Orthopedics


Because ligaments, tendons, and cartilage, have poor blood supply, they are slow to heal and often heal incompletely. Orthobiologic procedures, such as Stem Cell Therapy or PRP can accelerate the speed at which they heal and ensure a more complete recovery.

Common shoulder conditions

Read more about injuries to the shoulder.

We Can Help

To learn more about what we can do to help with your condition, call our office at 817.416.0970. We will thoroughly diagnose your condition and present you with treatment options. From there we will guide you along your road to recovery.