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Shoulder

Normal Anatomy of the Shoulder Joint

The shoulder is the most flexible joint in the body making it the most susceptible to instability and injury. It is a ‘ball-and-socket’ joint. A ‘ball’ at the top of the upper arm bone, humerus, fits neatly into a ‘socket’, called the glenoid, which is part of the shoulder blade, scapula.

How does the Knee joint work?

Find out more in this web based movie.

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Conditions

Rotator Cuff Tear

Rotator cuff is the group of tendons in the shoulder joint providing support and enabling wider range of motion. Major injury to these tendons may result in tear of these tendons and the condition is called as rotator cuff tear. It is one of the most common causes of shoulder pain in middle aged adults and older individuals.

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SLAP Tear

The shoulder joint is a ball and socket joint. A ‘ball’ at the top of the upper arm bone (the humerus) fits neatly into a ‘socket’, called the glenoid, which is part of the shoulder blade (scapula). The term SLAP (superior –labrum anterior-posterior) lesion refers to an injury of the superior labrum of the shoulder. The labrum is a ring of fibrous cartilage surrounding the glenoid for stabilization of the shoulder joint.

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Acromioclavicular Separation

Acromioclavicular joint (AC joint) dislocation or shoulder separation is one of the most common injuries of the upper arm. It commonly occurs in athletic young patients and results from a fall directly onto the point of the shoulder. It involves separation of the AC joint and injury to the ligaments that support the joint. The AC joint forms where the clavicle (collarbone) meets the shoulder blade (acromion).

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Shoulder Impingement

Shoulder impingement is the condition of inflammation of the tendons of the shoulder joint. It is one of the most common causes of pain in the adult shoulder. The shoulder is a ‘ball-and-socket’ joint. A ‘ball’ at the top of the upper arm bone, humerus, fits neatly into a ‘socket’, called the glenoid, which is part of the shoulder blade, scapula. Shoulder impingement is also called as swimmer’s shoulder, tennis shoulder, or rotator cuff tendinitis.

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Frozen Shoulder

Frozen shoulder, also called adhesive capsulitis is a condition characterized by pain and loss of motion in shoulder joint. It is more common in older adults aged between 40 and 60 years and is more common in women than men.

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Shoulder Instability

Shoulder instability is a chronic condition that causes frequent dislocations of the shoulder joint. A dislocation occurs when the end of the humerus (the ball portion) partially or completely dislocates from the glenoid (the socket portion) of the shoulder. A partial dislocation is referred to as a subluxation whereas a complete separation is referred to as a dislocation. The common symptoms of shoulder instability include pain with certain movements of the shoulder; popping or grinding sound may be heard or felt, swelling and bruising of the shoulder may be seen immediately following subluxation or dislocation.

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Procedures

Shoulder Arthroscopy

Shoulder arthroscopy is a surgical procedure in which an arthroscope is inserted into the shoulder joint. The benefits of arthroscopy are smaller incisions, faster healing, a more rapid recovery, and less scarring. Arthroscopic surgical procedures are often performed on an outpatient basis and the patient is able to return home on the same day.

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Rotator Cuff Repair

Rotator cuff is the group of tendons in the shoulder joint providing support and enabling wider range of motion. Major injury to these tendons may result in tear of these tendons and the condition is called as rotator cuff tear. It is one of the most common causes of shoulder pain in middle aged adults and older individuals. It may occur with repeated use of arm for overhead activities, while playing sports or during motor accidents.

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Shoulder Labrum Repair

Labrum repair is a surgical technique recommended for treating labrum tear. Labrum is a triangular, fibrous, rigid cartilage structure lining the ball-and-socket joint of the shoulder. It provides cushioning support to these two joints. It also deepens the socket and helps to stabilize the joint.

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Bankart Repair

Bankart tear is a specific injury to a part of the shoulder joint called the labrum. Labrum is a ring of fibrous cartilage that surrounds the glenoid and stabilizes the shoulder joint. Bankart tear leads to recurrent dislocations, feeling of looseness, lack of strength, pain, or clicking and arthritis of the shoulder. Shoulder instability may be caused by injury, falling on outstretched hand, repetitive overhead sports such as basketball, volley ball, or weight lifting.

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AC Joint Reconstruction

Of late, research has been focused on improving surgical techniques used to reconstruct the severely separated AC joint. The novel reconstruction technique that has been designed to reconstruct the AC joint in an anatomic manner is known as anatomic reconstruction.

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Shoulder Joint Replacement

Shoulder joint replacements are usually done to relieve pain and when all non-operative treatment to relieve pain have failed.

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Click on the topics below to find out more from the Orthopedic connection website of American Academy of Orthopedic Surgeons.