Shoulder impingement happens when soft tissues in the shoulder, often the rotator cuff tendons or the subacromial bursa, become compressed and irritated when you lift or move your arm. This can lead to pain, weakness, stiffness, night discomfort and difficulty with everyday tasks such as dressing, driving, reaching overhead, gym training or sleeping on the affected side.
At RAD Clinics, we focus on accurate diagnosis first. Shoulder impingement can overlap with bursitis, rotator cuff tendinopathy or a partial tendon injury, so understanding exactly what is irritated helps us guide the right treatment. Our approach is ultrasound-first, where appropriate, with ultrasound-guided injections available when clinically suitable.
What is shoulder impingement?
Shoulder impingement occurs in the small space between the top of the upper arm bone and the acromion, which is part of the shoulder blade. This area is called the subacromial space.
Several important structures sit here:
- The rotator cuff tendons, which help lift and rotate the arm
- The subacromial bursa, a fluid-filled cushion that reduces friction
- The humeral head, the top of the upper arm bone
- The acromion, the bony roof above the tendons
When the tendon or bursa becomes swollen or irritated, there is less room for smooth movement. Lifting the arm, especially overhead, can then cause rubbing, pinching and pain.
Is shoulder impingement the same as a rotator cuff injury?
Not exactly. Shoulder impingement can irritate the rotator cuff tendons, but a rotator cuff tear is a separate structural injury. The two can happen together, which is why assessment matters.
Ultrasound can help us look at the tendons and bursa in real time, checking for bursitis, tendinopathy, partial tears and other soft tissue causes of shoulder pain.
Symptoms of impingement in the shoulder
The symptoms of impingement in the shoulder can vary, but common signs include:
- Pain when lifting the arm
- Pain reaching overhead
- Pain reaching behind your back
- Night pain, especially when lying on the affected side
- Weakness when lifting or rotating the arm
- Pain during sport, gym work or manual tasks
- A painful arc of movement
Pain is often felt around the outer shoulder, upper arm or front of the shoulder. Bursa irritation may feel like a deep ache, while tendon irritation is often sharper during movement.
Over time, pain can make you use the shoulder less, which may lead to stiffness and reduced confidence with movement.
What causes shoulder impingement?
Shoulder impingement is usually linked to a combination of factors rather than one single cause. These may include repetitive overhead activity, rotator cuff overload, bursitis, tendon degeneration, poor shoulder mechanics, posture-related strain, previous injury or age-related tissue change.
It is more common in people who regularly load the shoulder, including swimmers, racquet sport players, gym users, painters, decorators, manual workers and people with previous shoulder injuries.
Poor posture can contribute, but it is rarely the whole story. The key is understanding what is happening in your shoulder, not simply blaming posture alone.
How is shoulder impingement diagnosed?
Diagnosis usually starts with your history and a physical examination. We ask where the pain is, what movements trigger it, whether sleep is affected and whether there has been an injury.
Imaging may then help confirm which tissues are involved. An X-ray can show bone and joint changes. Ultrasound is useful for tendons, the bursa and dynamic shoulder movement. MRI may be needed when deeper structural detail is required.
At RAD Clinics, ultrasound is especially valuable because it allows us to assess soft tissues clearly, observe movement, and plan ultrasound-guided treatment more accurately when needed.
Shoulder impingement treatment options
Many cases improve without surgery, especially with early diagnosis and targeted non-surgical care.
First-line shoulder impingement treatment may include relative rest, activity modification, physiotherapy, strengthening, movement retraining and pain management. Physiotherapy is important because it helps improve shoulder mechanics and gradually rebuilds confidence and strength.
If pain is stopping you from progressing with rehabilitation, an injection may be considered. A shoulder impingement injection is often placed into the subacromial bursa when inflammation is a major driver of symptoms. At RAD Clinics, injections are ultrasound-guided, helping us place treatment more precisely rather than relying on guesswork.
A corticosteroid injection may help reduce inflammation and pain in selected cases. It does not correct every underlying movement or loading issue, so it usually works best as part of a wider plan that includes rehabilitation.
PRP injection for shoulder impingement may be considered in selected tendon-related cases, such as rotator cuff tendinopathy or partial tendon injury. It is not suitable for everyone, and the best option depends on the diagnosis.
Surgery is usually reserved for persistent symptoms that do not improve after appropriate non-surgical care, or where a significant tear or more complex problem needs specialist review.
How long does shoulder impingement take to heal?
Shoulder impingement recovery time depends on severity, how long symptoms have been present, which tissue is involved and how well the shoulder responds to treatment.
Mild cases may improve within a few weeks. Moderate or persistent cases can take several months. An injection may reduce pain sooner, but rehabilitation still matters if you want longer-term improvement.
Recovery can be slower if symptoms have been present for a long time, there is bursitis or tendon injury, work or sport keeps overloading the shoulder, or rehab is not completed.
When should you seek treatment?
It is sensible to seek assessment if shoulder pain lasts more than a few weeks, disturbs sleep, causes weakness, reduces movement, affects driving, work or exercise, or follows an injury.
Early diagnosis helps match the right treatment to the right problem. At RAD Clinics, we aim to give you clarity, reassurance and a practical next step.
Where can you get shoulder impingement treatment in the UK?
When choosing a shoulder impingement clinic, look for musculoskeletal expertise, ultrasound-led assessment, clear diagnosis, ultrasound-guided injections where appropriate, and personalised treatment planning.
At RAD Clinics, we provide ultrasound-first assessment and ultrasound-guided shoulder treatments, including options for shoulder impingement, bursitis and related rotator cuff problems. Our goal is to help you understand what is causing your pain and choose the most suitable treatment pathway.
Fee disclaimer: Any fees listed on our website or discussed at booking are subject to change. Please check the latest pricing directly with RAD Clinics before booking.
Common questions about shoulder impingement
Does steroid injection help shoulder impingement?
It may help reduce pain and inflammation in selected cases, especially when symptoms are limiting rehabilitation.
How long does a cortisone injection take to work?
Some people notice improvement within a few days, while others may take one to two weeks. Response varies.
Will a steroid injection cure shoulder impingement?
Not always. It can reduce pain, but exercise, movement retraining and load management are often still needed.
How long does shoulder impingement last?
The duration varies. Mild cases may settle within weeks, while longer-standing or more complex cases may take months to improve properly.
References
- British Elbow & Shoulder Society. Subacromial shoulder pain.
- ElMeligie MM, et al. Systematic review and meta-analysis on ultrasound-guided corticosteroid injections for shoulder diseases. Journal of Ultrasound, 2023.
- Rees JL, et al. Shoulder pain diagnosis, treatment and referral guidelines for primary, community and intermediate care. Shoulder & Elbow, 2021.
