What it is

A shoulder dislocation happens when the upper arm bone pops out of its socket at the shoulder. The shoulder joint is very mobile but not very stable, so it’s the most commonly dislocated joint in the body. Most dislocations happen when the arm is put into an awkward position or hit hard, such as during a fall, sports injury, or accident.

 

How it happens

  • Anterior dislocation (toward the front) is the most common and typically occurs when the arm is lifted out and rotated outward.
  • A sharp blow, sudden twist, or force on an outstretched arm can pull the joint out of place.
  • Once the shoulder has dislocated once, the supporting tissues may stretch, making it easier to happen again.

 

How it feels

  • Sudden pain and loss of movement in the shoulder
  • Feeling like the shoulder came “out of place”
  • The arm may be held slightly away from the body and rotated
  • Tenderness, swelling, and sometimes numbness if nerves were stretched
  • You may feel stiffness and weakness afterward as well

 

Acute management – when to see a doctor

A dislocated shoulder must be relocated by a trained medical professional.
You should seek urgent medical attention if you suspect a dislocation.

Until you are seen by a doctor:

  • Keep the arm still and supported (a sling can help)
  • Avoid trying to push the shoulder back in yourself
  • Apply ice to help reduce pain and swelling

X-rays are usually taken before and after the shoulder is put back into place to check for fractures or other injuries.

 

Role of physiotherapy

Physiotherapists help you recover strength and stability once the shoulder has been put back into place and the initial pain has settled:

  • Early phase: Gentle pain-free movement and supportive care like ice and sling advice
  • Movement rehab: Safe exercises to improve shoulder motion
  • Strengthening: Targeted work for the rotator cuff, shoulder blade muscles, and surrounding stabilizers to help control the joint
  • Balance and proprioception training: Exercises that improve shoulder awareness and control during movement
  • Return-to-activity planning: Gradual progression back to daily tasks, work, or sport

 

Recovery

Healing takes time. With guided physiotherapy, most people improve steadily over weeks to months, depending on severity and activity level. A step-by-step rehab approach reduces the risk of the shoulder dislocating again.

 

Reference:

Abrams R, Akbarnia H. Shoulder Dislocations Overview. In: StatPearls [Internet]. StatPearls Publishing; 2025. PMID: NBK459125.