Shoulder Dislocation Treatment
The shoulder joint is the most mobile joint in the body — and that extraordinary range of motion comes at a cost: the shoulder is also the most commonly dislocated major joint. A shoulder dislocation occurs when the head of the humerus (the ball of the upper arm bone) is forced completely out of the glenoid socket of the shoulder blade, tearing the labrum, capsular ligaments, and often damaging the cartilage and bone in the process. The vast majority of shoulder dislocations are anterior — the humeral head displaces forward and downward out of the socket — though posterior and inferior dislocations can also occur. Every dislocation damages the stabilizing structures of the joint, and the risk of recurrent dislocation increases substantially after the first episode — particularly in younger patients — making prompt evaluation and appropriate treatment essential for preventing chronic instability.
Dr. Jonathan Glashow is a board-certified orthopedic surgeon and Clinical Associate Professor of Orthopedic Surgery at NYU Grossman School of Medicine, with a traveling shoulder fellowship under Dr. Charles Rockwood and Dr. Richard Hawkins and fellowship training in arthroscopic surgery at the Southern California Orthopedic Institute/UCLA. As Chief Medical Officer for the New Jersey Devils and Philadelphia 76ers, Dr. Glashow manages acute shoulder dislocations on the sideline — performing closed reductions, assessing for associated injuries, and developing return-to-play protocols under the highest competitive demands. This sideline experience, combined with over 30 years of clinical practice and more than 15,000 procedures, gives him the diagnostic precision to distinguish a simple dislocation from one involving significant bone loss, rotator cuff damage, or neurovascular compromise — a distinction that directly impacts treatment decisions and long-term outcomes. Named a Castle Connolly Top Doctor every year since 2000, he treats shoulder dislocations at his Upper East Side practice in New York City with same-day imaging and emergency evaluation available.
Types of Shoulder Dislocation
Anterior Dislocation: The most common type, accounting for approximately 95 percent of all shoulder dislocations. The humeral head is forced forward and out of the socket, typically tearing the anterior labrum from the glenoid rim — an injury called a Bankart lesion. A compression fracture on the back of the humeral head (Hill-Sachs lesion) is also common and occurs when the bone impacts the edge of the glenoid during the dislocation.
Posterior Dislocation: Much less common, occurring when the humeral head is forced backward out of the socket. Posterior dislocations are associated with seizures, electric shock, and falls onto a flexed, internally rotated arm. They can be difficult to diagnose on standard X-rays and are sometimes missed initially.
Inferior Dislocation (Luxatio Erecta): The rarest type, in which the humeral head displaces downward and the arm is locked in an overhead position. This pattern carries a higher risk of associated nerve and vascular injury.
Symptoms of a Shoulder Dislocation
- Sudden, severe pain at the time of injury
- Visible deformity — the shoulder appears squared off rather than rounded
- Inability to move the arm
- Rapid swelling and bruising
- Numbness or tingling in the arm or hand (possible nerve involvement)
- A sensation that the shoulder has “come out of joint”
Treatment
Acute Management: The immediate treatment for a shoulder dislocation is closed reduction — a procedure in which the humeral head is carefully maneuvered back into the socket, typically under sedation or local anesthesia. After reduction, X-rays are taken to confirm the shoulder is properly relocated and to evaluate for fractures. The arm is immobilized in a sling to allow the torn ligaments and capsule to begin healing, followed by physical therapy to restore range of motion and strengthen the rotator cuff and scapular stabilizers.
Assessing for Associated Injuries: A shoulder dislocation is rarely just a dislocation — the force required to push the humeral head out of the socket almost always tears the labrum (Bankart lesion) and frequently causes a bone compression injury on the humeral head (Hill-Sachs lesion) or fracture of the glenoid rim. Dr. Glashow evaluates each patient with X-rays and, when indicated, MRI or CT imaging to identify the full scope of structural damage and determine whether non-operative healing is likely to provide adequate long-term stability.
Surgical Stabilization: Surgery is recommended when the shoulder continues to dislocate or subluxate despite rehabilitation, when imaging reveals significant bone loss from the glenoid or humeral head that compromises the socket’s ability to contain the ball, or when a first-time dislocation occurs in a young athlete with high recurrence risk. The most common surgical procedure is arthroscopic Bankart repair — reattaching the torn labrum to the glenoid rim with suture anchors. For patients with significant bone loss, an open bone-grafting procedure such as a Latarjet may be recommended. For comprehensive information about surgical options, see the shoulder instability repair page.
Shoulder Dislocation Treatment in New York City
If you have suffered a shoulder dislocation, are experiencing recurrent episodes of your shoulder slipping out of place, or want to understand your risk of future instability after a first-time dislocation, Dr. Glashow provides emergency evaluation with same-day imaging at his Upper East Side practice. Contact our office to schedule your appointment.
Frequently Asked Questions About Shoulder Dislocations
What should I do immediately after a shoulder dislocation?
Do not attempt to push the shoulder back into place yourself — improper reduction can damage nerves, blood vessels, and fracture bone. Immobilize the arm against the body using a sling, towel, or clothing, apply ice to reduce swelling, and seek emergency evaluation as soon as possible. Dr. Glashow offers emergency and after-hours appointments for acute shoulder injuries at his Upper East Side practice.
How likely is the shoulder to dislocate again after the first time?
Recurrence risk depends heavily on the patient’s age at the time of the first dislocation. Patients under 20 have the highest recurrence rate — studies show that approximately 70 to 90 percent of first-time dislocations in this age group will dislocate again without surgical stabilization. Patients between 20 and 40 have a recurrence rate of approximately 40 to 60 percent. Patients over 40 have a lower recurrence rate but a higher likelihood of associated rotator cuff tears. This age-dependent recurrence data is one of the primary reasons Dr. Glashow may recommend surgical stabilization after a first dislocation in a young athlete.
What is the difference between a shoulder dislocation and a shoulder separation?
These are two completely different injuries involving different joints. A shoulder dislocation involves the glenohumeral (ball-and-socket) joint — the humeral head comes out of the glenoid socket. A shoulder separation involves the acromioclavicular (AC) joint at the top of the shoulder — the collarbone separates from the shoulder blade. The mechanisms, symptoms, treatment approaches, and surgical options are entirely different.
What damage occurs inside the shoulder during a dislocation?
When the shoulder dislocates, the labrum is almost always torn from the glenoid rim (Bankart lesion), the capsular ligaments are stretched or torn, and the humeral head frequently sustains a compression fracture (Hill-Sachs lesion) from impacting the edge of the socket. In patients over 40, rotator cuff tears are common associated injuries. The glenoid rim itself can fracture (bony Bankart lesion), which reduces the effective depth of the socket. Each subsequent dislocation causes additional damage to these structures, which is why recurrent instability tends to worsen progressively.
Can a dislocated shoulder heal without surgery?
Many first-time shoulder dislocations — particularly in older patients — can be managed successfully without surgery through a period of sling immobilization followed by physical therapy. However, the labral tear that occurs during the dislocation often does not heal with sufficient strength to prevent recurrence, particularly in younger and more active patients. Dr. Glashow evaluates each patient’s age, activity level, imaging findings, and recurrence risk to determine whether non-operative management or early surgical stabilization is the most appropriate approach.
When is surgery recommended after a shoulder dislocation?
Surgery is typically recommended when the shoulder has dislocated more than once (recurrent instability), when a first-time dislocation in a young athlete carries a very high statistical risk of recurrence, when imaging shows significant bone loss from the glenoid or humeral head, when an associated rotator cuff tear requires repair, or when the patient’s sport or occupation demands reliable overhead stability. Dr. Glashow discusses the risks and benefits of surgical versus non-operative management with each patient individually.
