Subacromial Injections
Ultrasound-Guided Subacromial Bursa Injections

A subacromial injection delivers anti-inflammatory medication directly into the subacromial space, the small gap beneath the acromion (the bony tip of the shoulder blade) that contains the subacromial bursa. When this space becomes inflamed, the tendons of the rotator cuff are pinched as you lift the arm, causing pain.

It is most commonly used to treat shoulder impingement (subacromial impingement syndrome), subacromial bursitis, and rotator cuff tendinopathy, conditions that share the same painful arc of movement and often respond well to a precisely placed injection.

By calming the inflammation in and around the bursa, the injection reduces pain and makes it easier to move the shoulder and to engage with physiotherapy, which is often the key to a lasting result.

A subacromial injection is suitable for people with impingement-type shoulder pain that has not settled with rest, anti-inflammatories or initial physiotherapy. The typical pattern is pain on the outer shoulder and upper arm that is worse when lifting or reaching.

• Pain when raising the arm to shoulder height (a painful “arc” of movement).
• Difficulty reaching overhead, behind your back, or into a seatbelt.
• Pain at night, especially lying on the affected shoulder.
• Aching that radiates from the shoulder into the upper arm.
• Weakness or catching linked to rotator cuff irritation.

An ultrasound assessment confirms the diagnosis and rules out other causes, so the injection is only used when it is the right treatment for the problem.

At the Harley Street Ultrasound Group, your appointment begins with a diagnostic ultrasound assessment, performed by your specialist consultant doctor. Ultrasound shows the rotator cuff tendons, the acromion and the subacromial bursa in real time, and is used to confirm impingement or bursitis and to rule out other causes of shoulder pain such as a rotator cuff tear, calcific tendinopathy or a frozen shoulder, which can feel similar but need different treatment.

Confirming the bursa on imaging first is what makes the injection precise. Because the same ultrasound is then used to guide the injection, your consultant can place the needle exactly into the target structure, rather than by external approximations.

If the assessment shows that a different treatment would serve you better, your consultant will tell you on the day. See “What if I don’t need an injection?” below.

A subacromial injection works by delivering medication directly into the subacromial bursa under ultrasound guidance. Most injections contain a corticosteroid (cortisone) combined with local anaesthetic: the steroid reduces the inflammation that drives impingement pain, while the anaesthetic gives rapid early relief.

Because the procedure is performed under real-time ultrasound, your consultant can ensure the injection reaches the exact location and confirm the medication is going precisely to where it is needed. This precision is what makes the injection both effective and safe, allowing the rotator cuff tendons and nearby structures to be identified and avoided.

Calming the inflammation creates a window of reduced pain that makes movement and rehabilitation far easier, which is why the injection works best when combined with a course of physiotherapy.

Most patients find a subacromial injection far more comfortable than expected. Local anaesthetic is used, so you typically feel a small sting as it goes in, followed by a brief sensation of pressure. This is normal and settles quickly.

The appointment usually takes around 20–30 minutes from assessment to completion:

• Your consultant scans the shoulder to confirm the diagnosis.
• The skin is cleaned and local anaesthetic is applied.
• The injection is delivered into the bursa under live ultrasound guidance.
• You rest briefly and are given aftercare guidance before you leave.

There is no general anaesthetic and no overnight stay. You can usually drive yourself home, though arranging a lift is sensible if your shoulder feels sore afterwards.

Your injection is performed by a consultant specialist doctor, not a physiotherapist, nurse or GP. This matters, as the majority of MSK injections in the UK are delivered by non-consultant practitioners, often without ultrasound image guidance.

At the Harley Street Ultrasound Group, you receive both the clinical judgement of a senior specialist and the precision of real-time ultrasound examination in a single appointment. Your consultant assesses the shoulder, confirms the source of pain, performs the procedure and explains your aftercare personally.

We will never give you an injection you do not need. If, after your ultrasound assessment, your consultant decides an injection is not the right treatment for you, the procedure simply won’t go ahead. You will be charged at our standard diagnostic ultrasound rate, not the full treatment price.

This is a deliberate commitment to clinical integrity. Some providers treat every appointment as a guaranteed procedure; we don’t. You can book knowing that you will receive a genuine specialist assessment first, and that treatment only proceeds when a senior clinician believes it is genuinely warranted.

If an injection isn’t appropriate, your consultant will explain why and set out the alternatives. This may include physiotherapy, a different injection, such as PRP, or onward referral, meaning you still leave with a clear plan.

The local anaesthetic often eases pain within hours, though this is temporary. The steroid effect builds over the next few days to two weeks, when most patients notice a meaningful reduction in impingement pain and easier movement.

A subacromial injection has a good success rate for relieving impingement and bursitis pain, and for many people a single injection is enough, particularly when the pain-free window is used for physiotherapy. Relief commonly lasts from several weeks to several months; results vary with the underlying cause and individual factors. Your consultant will give you a realistic picture based on your own assessment, and some patients benefit from a repeat injection.

There is no significant downtime. You can return to everyday activities the same day, though it is sensible to avoid heavy lifting and repetitive overhead use for 24–48 hours. Some mild soreness in the shoulder for a day or two is normal and settles with simple pain relief.

The single most important part of aftercare is rotator cuff rehabilitation, using the reduced-pain window to restore strength and movement. Your consultant will recommend specific exercises, and many patients benefit from a short course of physiotherapy alongside the injection.

You will receive clear written aftercare guidance, and our team remains available if you have any questions as you recover.

A subacromial injection targets the subacromial bursa specifically, which is why it is the injection of choice for impingement and bursitis. Other shoulder injections target different structures. A glenohumeral (intra-articular) steroid injection is used for frozen shoulder and arthritis, and a PRP injection may be considered for some rotator cuff tendinopathy. Confirming the diagnosis with an ultrasound first will determine which injection is right for you.

Injections and physiotherapy work best together, not in competition. The injection reduces pain so you can rehabilitate effectively, while physiotherapy addresses the underlying mechanics to make the result last. For many patients with impingement, a single well-placed injection alongside a rehab programme is enough.

Your consultant will help you choose the right path, and can discuss our other shoulder injection options if a different treatment suits you better.

An ultrasound-guided subacromial injection at the Harley Street Ultrasound Group is £525, all fees inclusive. There are no extra charges for the consultant assessment, the diagnostic ultrasound, the procedure itself, or your written report.

What’s included in the price:

• Consultant specialist assessment and diagnostic ultrasound
• Ultrasound-guided subacromial injection procedure
• Local anaesthetic and all consumables
• Written report and tailored aftercare guidance

There are no referral required and no waiting lists. Importantly, if your consultant assesses you and decides an injection is not clinically appropriate, you will only be charged at our standard diagnostic ultrasound rate, not the procedure price. We accept self-pay and most major UK private health insurers; please confirm cover with your insurer before booking.

Coming to us privately does not affect your NHS care. Our goal is to get you answers and treatment quickly, without the long waits often involved in accessing injection therapy on the NHS.

You are seen by a consultant specialist who can assess, diagnose and, where appropriate, treat your shoulder in a single visit. Your report and images can be shared securely with your NHS GP or any specialist, and if your situation needs onward NHS care your consultant will write to your GP accordingly.

We don’t want you waiting months in pain when effective treatment is available now.