17909 Separated Shoulder

Overview

A separated shoulder is an injury to the joint where your collarbone meets the top of your shoulder blade. This joint is called the acromioclavicular (AC) joint. Despite the name, it is different from a dislocated shoulder, which affects the ball-and-socket joint. A separated shoulder happens when the ligaments that hold this small joint together are stretched or torn.

Yes. Separated shoulder is one of the most common shoulder injuries, particularly among young adults and athletes. However, anyone can injure this joint in a fall.

It most often affects people who play contact or high-impact sports, people who have had a fall onto the shoulder, and older adults who lose their balance. Men are affected more often than women, but it can happen to anyone.

Symptoms

Common symptoms

• Pain at the top of the shoulder, especially when touching the area
• Swelling and tenderness over the collarbone near the shoulder
• Difficulty moving the arm overhead or across the body
• A visible bump or bulge on the top of the shoulder in more severe injuries
• Bruising that may appear a few days later

Symptoms in children

• Children can injure the same joint, usually after a fall or sports injury. Symptoms look similar, but children may find it harder to describe where it hurts. They might refuse to use the arm or cry when the shoulder is moved. Always have a child with a shoulder injury checked by a doctor, because their bones are still growing.

Symptoms in older adults

• In older adults, a separated shoulder often happens after a fall. Pain may be less obvious, but swelling and a bump can still appear. Older adults may also have other shoulder problems like arthritis, which can make recovery slower. Early gentle movement and support are important.

Causes

Main causes

• A direct fall onto the tip of the shoulder
• A strong blow to the top of the shoulder, such as in contact sports
• Falling onto an outstretched hand or elbow, which can jar the AC joint

Risk factors

• Playing contact sports like football, rugby, or hockey
• Previous shoulder injury or weakness in the shoulder muscles
• Older age, because falls are more common and ligaments may be less flexible
• Participating in activities where you could fall from height, such as cycling or skiing

When to see a doctor

See a doctor urgently if:

• Visit urgent care or your doctor the same day if you have severe pain, a large bump, or cannot move your arm.
• Numbness or tingling in your hand also needs same-day evaluation.

Book a routine appointment if:

• Make a routine appointment if you have shoulder pain that lasts more than a few days after a fall.
• See your doctor if pain keeps you from sleeping or doing normal activities.

Diagnosis

To diagnose a separated shoulder, your doctor will ask how the injury happened and examine your shoulder. They will look for swelling, bruising, and a bump, and will gently press on the AC joint to check for tenderness. They will also ask you to move your arm in different directions.

Tests that may be done

• X-ray of the shoulder, sometimes with a small weight held in the hand to show the gap between bones more clearly
• Ultrasound to look at the ligaments and soft tissue
• MRI scan if the doctor suspects other injuries, such as damage to the rotator cuff

What to expect at your appointment

Your doctor will explain how severe the injury is, often using a grading system from mild (stretch) to severe (complete tear). They may also take images to make sure no bones are broken. Most people do not need any special preparation for these tests.

Treatment

Treatment for a separated shoulder focuses on reducing pain, protecting the joint, and helping you regain movement and strength. Many injuries heal without surgery. You can usually start with simple home care and then progress to exercise guided by a physiotherapist.

Self-care at home

• Rest your shoulder for a few days, avoiding movements that cause sharp pain.
• Apply an ice pack wrapped in a towel to the sore area for 15 to 20 minutes several times a day.
• Use a sling for comfort as advised by your doctor, but do not keep it on too long — gentle movement helps healing.
• Take over-the-counter pain relievers as directed by your pharmacist or doctor after checking they are safe for you.
• Sleep propped up with pillows if lying flat makes the pain worse.

Medical treatments

Medical care may include stronger pain relief, anti-inflammatory medicines, or a temporary steroid injection to reduce severe inflammation. These are always prescribed by a healthcare professional. A physiotherapist will design a graded exercise programme to restore movement and strengthen the shoulder muscles.

When is surgery considered?

Surgery is only considered for severe separated shoulders, especially in young, active people or those whose job involves heavy lifting. The operation aims to repair or reconstruct the damaged ligaments. Most mild and moderate injuries do not need surgery.

Living with this condition

In the first week, take it easy. Use your sling when needed and avoid lifting heavy objects. Once the sharp pain settles, begin gentle pendulum exercises (letting the arm hang and swing) as advised by your physiotherapist. Gradually return to normal activities over several weeks, and avoid contact sports until your shoulder feels strong again.

Lifestyle tips

• Use good posture to reduce strain on the shoulder.
• Avoid sleeping on the injured side until the pain is gone.
• Warm up properly before exercise and strengthen your shoulder muscles.
• Modify your activities to avoid falls, such as clearing trip hazards at home.

Diet and exercise

A balanced diet with enough protein, vitamin C, and calcium supports healing of ligaments and bones. Exercise, especially shoulder movement and strengthening exercises, is key to recovery. Your physiotherapist can give you safe exercises that start gently and gradually get harder.

Mental health and emotional wellbeing

A shoulder injury can be frustrating, especially if it stops you from playing sports or doing daily activities. You might feel anxious about returning to activity or worried about re-injury. It is normal to feel this way. Talking to your doctor or a counsellor can help, and focusing on small recovery goals can improve your mood.

Prevention

You cannot always prevent a separated shoulder, but you can lower your risk. Strengthening the shoulder and core muscles, improving balance, and learning how to fall safely can all help. In contact sports, playing by the rules and wearing appropriate protective gear also reduces the chance of injury.

Complications

If left untreated

• Persistent pain or weakness in the shoulder
• Arthritis in the AC joint over time
• Limited range of movement, especially reaching overhead
• An unsightly bump that may remain, though it is usually harmless

Long-term outlook

The outlook is very good. Most people with a separated shoulder recover fully within a few weeks to a few months, even without surgery. With the right rehabilitation, you can get back to most activities and sports. Some people have a small bump or mild ache, but this rarely limits day-to-day life.

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