Subacromial Decompression Info Consent
Reviewed by Dr Kieran Hirpara, Specialist Orthopaedic Surgeon Last reviewed
Why this operation has been suggested
Dr Kieran Hirpara, an upper-limb surgeon at Mater Private Hospital Rockhampton, starts with the least invasive options that suit your condition. We reserve this procedure for cases where non-surgical care has not provided enough relief. Patients are generally referred to our clinic by their GP; if a physiotherapist has suggested you see us, you will still need a referral from your GP in order to be eligible for the Medicare rebate. A clinic assessment establishes the diagnosis. For long-standing problems we usually try activity change, physiotherapy, or injections first. Surgery is considered when these have not worked.
We suggest subacromial decompression if you have had shoulder pain for at least 6 months and tests show mechanical impingement. This keyhole surgery removes bone or tissue pressing on your shoulder tendons. It aims to reduce pain and improve your quality of life. We select patients carefully because outcomes depend on proper diagnosis. This shared decision ensures the operation matches your specific needs.
Before the operation
Please fast for at least seven hours before your procedure. Stop taking certain medications as advised by your surgeon, who will provide specific instructions. Arrange for someone to drive you home and stay with you afterward. Bring a list of all current medications and wear comfortable clothing. You will need recent imaging, such as an X-ray, MRI, or ultrasound, to help plan the operation. Blood tests and a review with the anaesthetist are not routine. If you have other medical conditions, you may need these additional checks. Your surgeon will confirm what is needed for your specific case.
On the day
You present to the hospital's surgical admissions unit, where you are checked in and prepared for theatre. You meet the anaesthetist, who explains your pain management plan. This operation is done under general anaesthetic combined with a regional nerve block. You will be fully asleep for the operation, and the block — an injection that numbs the nerves supplying the arm before you wake up — provides pain relief for the first 12 to 24 hours after surgery. The anaesthetist will meet you before the operation and talk you through both parts.
You are then taken into the operating theatre, where the operation is performed. You wake up in the recovery area, where nurses monitor you while the anaesthetic wears off. Once you are stable you either go to the ward or go home, depending on the procedure and your recovery.
What the operation involves
Your surgeon performs this procedure using an arthroscopic technique. This means we use a small camera and special instruments inserted through several small keyhole cuts, or portals, around your shoulder. At least one of these incisions is placed at the back of your shoulder. This approach allows us to see inside the joint clearly while keeping the cuts small.
The main goal is to relieve pressure on the structures in your shoulder. We remove any bone spurs or inflamed tissue that is causing mechanical impingement. This creates more space for your tendons to move freely without getting pinched. If you have a calcific deposit, we may debride (clean out) it during the procedure.
After the work inside the shoulder is complete, we close the small incisions. We use sutures to secure the skin, and then apply a dressing to protect the area. The entire process is designed to address the source of your pain while minimising trauma to the surrounding tissues.
After the operation
You will wake up in the recovery ward with a simple sling for comfort. We manage your pain using standard medication and local numbing injections. Keep your dressings dry and intact. Most patients stay one night in hospital after this operation, though some are able to go home the same day. You must have someone stay with you for the first 24 hours. Do not drive while in a sling. Our policy is no driving for at least six weeks after any shoulder operation, regardless of which arm was operated on. You can drive once your surgeon clears you, typically at the six-week review (see Driving after upper-limb surgery). Remove the sling only for exercises and washing.
Recovery
Your shoulder will feel sore and swollen for the first few days. This is normal. We use a simple sling for comfort, which you remove for exercises and washing. We do not use rigid braces or pillows. Ice packs and prescribed pain relief help manage the discomfort. Most people find sleeping easier by propping the arm with pillows.
You will start gentle movements soon. Your physiotherapist guides your rehabilitation to restore strength and range of motion. Early on, you avoid lifting heavy objects or reaching overhead. As swelling settles and movement returns, you can gradually resume light daily tasks. Grip strength and shoulder control improve steadily.
Driving requires full control and reaction time. Our policy is clear: no driving for at least six weeks after any shoulder operation, regardless of which arm was operated on. You must not drive while in a sling. Once your surgeon clears you, typically at the six-week review, you may resume driving. See our guide on Driving after upper-limb surgery for details.
Recovery varies between individuals. Your timeline may differ; your surgeon and physio will guide you based on your progress and comfort levels.
What can go wrong
Most patients do well, but problems can occasionally happen. Your surgeon and the team monitor you closely to spot any issue early.
If you have calcific deposits removed along with the decompression, you may find that your shoulder takes longer to feel completely pain-free during daily activities. You might notice that returning to unrestricted movement feels slower than expected. This is a known part of the healing process for this specific combination of procedures.
If you are having a rotator cuff repair at the same time, be aware that adding a decompression does not necessarily improve your long-term results. Some patients find that their recovery feels similar to having the cuff repair alone, without the extra benefit of decompression. In some cases, outcomes may even be lower compared to having the cuff repair by itself. Your surgeon will discuss whether this extra step is truly needed for your specific case.
There is a small risk of serious complications like blood clots. A rare case has been reported where a clot in the chest vein traveled to the lungs. You should watch for sudden shortness of breath, chest pain, or coughing up blood. If you notice these symptoms, seek emergency medical help immediately.
Prior decompression can also affect future surgeries. If you ever need a reverse total shoulder replacement later in life, having had a decompression before increases your risk of a stress fracture in the shoulder blade bone. This is something your surgeon will consider if you require further surgery down the line.
The complications table on this page lists typical rates if you want the specifics.
When to call us
Call us if you have a fever, increasing wound redness or discharge, or sudden severe pain. Go to emergency if you notice calf swelling or shortness of breath. Contact us immediately for loss of sensation or inability to move your limb. We want to ensure your recovery stays on track and address any concerns quickly.
Where to read more
This page is about the operation itself. The condition it treats — including what the evidence shows about when surgery helps and when it does not — is covered in more detail on the Subacromial Impingement and Bursitis page.
Where to read more
This page is about the operation itself. The condition it treats — including what the evidence shows about when surgery helps and when it does not — is covered in more detail on the Subacromial Impingement and Bursitis page.
