Shoulder Dislocation Treatment

Dr Bryan Tan, orthopaedic surgeon in Singapore.
Dr. Bryan Tan

MBBS (SINGAPORE) MMED (ORTHO) FRCS ED (ORTH)

The shoulder is the most commonly dislocated joint in the body. Dislocations of the shoulder in young adults and in older adults result in different problems.
In young adults, an initial shoulder dislocation may result in weakening of the shoulder such that the patient is prone to dislocations again in the future (recurrent dislocations).

What Is Shoulder Dislocation?

Shoulder dislocation occurs when your upper arm pops out of your shoulder socket.

A shoulder dislocation refers dislocation of the glenohumeral (ball and socket) joint. That means the ball (humeral head) is no longer sitting nicely in the socket (glenoid), but rather has “fallen off” the socket.

As you might guess, the ball can possibly “fall off” in any direction, i.e. to the front, the back, the bottom etc. But in reality, anteroinferior dislocations (the ball falls off to the front and bottom of the socket) are by far the most common.

Types of Shoulder Dislocation

Anterior Shoulder Dislocation 

Anterior shoulder dislocation occurs when the head of the humerus (arm bone) is moved forward in front of the shoulder socket. This is the most common type and typically happens when the arm is extended and externally rotated, such as during a fall or when throwing.

Posterior Shoulder Dislocation 

Posterior shoulder dislocation involves the humerus moving backwards and above the socket. This type of dislocation is less common and often results from seizures or electrical shocks. Due to its rarity and subtle nature, it can be challenging to diagnose.

Inferior Shoulder Dislocation 

Inferior shoulder dislocation is the least common type, where the humerus is pushed downward and out of the socket toward the armpit. This type of dislocation usually occurs when there is a forceful hyperextension of the arm.

Shoulder Subluxation (Partial Dislocation) 

A shoulder subluxation, or partial dislocation, happens when the head of the humerus is only partially out of the shoulder socket. While less severe than a complete dislocation, it can still cause significant pain and instability in the shoulder.

Causes of Shoulder Dislocation

  • Sports Injuries 

Shoulder dislocations often occur in sports involving high-impact or sudden movements. For instance, slipping during rock climbing can create a powerful pulling force on the arm, while reaching out to block an opponent in rugby or basketball can similarly strain the shoulder.

  • Falls 

Falling with the arm held out at an awkward angle is another common cause. This might happen during activities like skiing or when tripping and trying to catch yourself with an outstretched arm.

  • Trauma 

Accidents like car crashes or significant impacts can lead to shoulder dislocation. These incidents often involve sudden, unexpected movements that the body cannot adequately brace for.

  • Seizures or Electric Shock 

In rare cases, seizures or electric shock can cause a posterior shoulder dislocation due to involuntary muscle contractions pulling the humerus out of the socket. This type of injury is uncommon but can be severe.

Risk Factors for Shoulder Dislocation

Shoulder dislocations can happen to anyone, but certain individuals face a higher risk, including:

  • Contact Sports: Athletes involved in sports like rugby, football, or basketball are at higher risk due to the physical nature of these activities, which often include collisions or sudden, forceful movements.

 

  • Age: Individuals between 15 and 30 are more likely to experience shoulder dislocation. This age group is more active and may engage in high-risk sports or activities.

 

  • Previous Shoulder Dislocations: If you’ve dislocated your shoulder before, you’re at a greater risk of it happening again. A previous dislocation can weaken the shoulder joint and its supporting structures.

 

  • Gender: Men are more prone to shoulder dislocations compared to women. This may be due to a combination of factors, including different physical activity patterns and muscle strength.

What Are the Symptoms Of Shoulder Dislocation?

Common symptoms of shoulder dislocation include:

  • Falling with the arm violently forced overhead
  • Violent yanking force applied to the arm
  • Sports injuries
  • Sudden forceful twisting of the upper arm

How Is Shoulder Dislocation Diagnosed?

During a physical examination, your doctor may inspect the affected area for tenderness or any deformities. Furthermore, they may test your shoulder’s mobility by asking you to perform specific simple exercises to determine whether or not the shoulder joint is dislocated.

An X-ray of your shoulder joint may also be performed to reveal the dislocation and other damages to your shoulder joint. An MRI scan is often required to fully assess the extent of the injury.

​​Is your shoulder dislocation affecting your quality of life, and your ability to perform everyday activities such as working, playing sports and wearing your clothes?
Dr. Tan will assess your symptoms in detail before recommending the right surgical option for your specific injury.

How Is Shoulder Dislocation Treated?

Acute shoulder dislocations must be treated as soon as possible. The dislocated shoulder joint can usually be put back in position under sedation, by your doctor. It is important to avoid attempting to put the shoulder back yourself because of the risk of worsening the injury.

Some patients who have had a shoulder dislocation go on to develop a “loose shoulder”, which is prone to dislocating again, even with minimal trauma. Such a condition is known as recurrent shoulder dislocation.

Treatment for shoulder dislocation include:

Common treatment methods include:

  • Rest and avoid excessive shoulder movements
  • Simple and gentle stretching exercises to slowly regain shoulder mobility and strength
  • Physiotherapy

Surgery is recommended for recurrent shoulder dislocations, when patient have frequent near dislocations or when patients experience pain with certain shoulder movements.

What can you expect after a shoulder dislocation?

Most people recover fully from a shoulder dislocation and can return to their usual activities, including sports, once the shoulder has healed. Even if surgery is needed, the outlook remains positive, with many individuals resuming their pre-injury activity level.

However, there is an increased risk of re-injury. Studies show that athletes, particularly those under 25 who participate in contact sports, have a high chance of dislocating the same shoulder again.

Before getting back into physical activities, especially contact sports, it’s important to consult with your healthcare provider or surgeon. They can guide you on what to expect during your recovery and offer advice on preventing future dislocations.

Complications of an Untreated Shoulder Dislocation

If a shoulder dislocation is left untreated, several complications can arise, potentially affecting both the shoulder and surrounding structures. These include:

  • Bone Fractures: The impact can lead to fractures in the surrounding bones, particularly the humerus or scapula.
  • Ligament and Tendon Sprains: The force of the dislocation can stretch or tear the ligaments and tendons around the shoulder, causing pain and instability.
  • Nerve Damage: Nerves near the shoulder may get compressed or damaged, leading to numbness, tingling, or weakness in the arm.
  • Damaged Blood Vessels: The trauma can also harm blood vessels in the shoulder area, which may impact blood flow and lead to further complications.
  • Muscle Strains: The muscles surrounding the shoulder can become strained or injured, impairing movement and strength.
  • Hill-Sachs Lesion: This is a dent-like damage to the ball of the upper humerus, which can occur if the dislocated shoulder compresses against the edge of the socket. If not addressed, this lesion may lead to chronic instability and pain.

Preventing Shoulder Dislocation

While some risk factors for shoulder dislocation may be beyond your control, there are several proactive steps you can take to reduce your chances:

  • Avoid Falls and Shoulder Injuries: Be mindful of your surroundings to prevent accidents. Use caution when participating in activities that increase your risk of falling or sustaining a shoulder injury.
  • Wear Protective Gear: When engaging in contact sports or activities with a high risk of shoulder impact, use appropriate protective equipment, such as shoulder pads or braces, to shield your shoulders from injury.
  • Exercise Regularly: Maintain strength and flexibility in your shoulder joints and surrounding muscles through regular exercise. Focus on exercises that enhance joint stability and muscle balance to support overall shoulder health.
  • Follow Rehabilitation Guidelines: If you’ve previously dislocated your shoulder, adhere to any prescribed strength and stability exercises. Consistent practice of these exercises can help prevent future dislocations and support long-term shoulder stability.

Anatomy of the Shoulder Joint

The shoulder joint is made up of 3 bones: the shoulder blade (scapula), the humeral head and the collar-bone (clavicle).

Movements around the shoulder involve 3 separate articulations: the glenohumeral joint, the acromioclavicular joint and the scapulothoracic articulation. When the arm is raised, the majority of movement occur at the glenohumeral joint and the scapulothoracic articulation.

The glenohumeral joint is a ball and socket joint, comprising the socket (the glenoid) and the ball (the humeral head). Both surfaces of the joint are covered with an extremely smooth and rubbery cartilage (known as articular cartilage). The smooth surfaces create a frictionless articulation when lubricated with a small amount of joint fluid.

The glenoid is really a rather shallow socket. In fact, a dish is probably a more accurate description! This, however, is a design which is intended to allow the shoulder joint to have great range of movement.

Unfortunately, the price of big range of movement is stability. You can probably image that a big ball sitting on a shallow dish will fall off very easily.

While that is true to a certain extent, the body has ways of preventing this from happening. A ring of cartilage attached to the rim of the glenoid helps to not only deepen the socket, but also serves as the attachment point of ligaments that help to hold the humeral head in place. This ring of cartilage is known as the labrum.

Frequently Asked Questions

What happens after a shoulder dislocation?

Is shoulder dislocation serious? When should I visit a doctor?

I have a dislocated shoulder. How do I put it back in?

My shoulder has become unstable. Why has this happened?

What will the doctor do?

How are unstable shoulders resulting from Bankart lesions treated?

Will I be able to participate in sports after the surgery?

How to prevent shoulder dislocation?

Billing & Payment

Medisave & Insurance Claims

The following are accredited For Singaporeans, Singapore Permanent Residents and Foreigners. If your insurance is not listed, you will still be able to make claims for eligible procedures! We have experience processing claims from many other various insurance providers. Please contact us if you have any queries.

WHAT’S THE FIRST STEP?

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STEP 3

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