Subacromial Decompression Recovery
Arthroscopic Subacromial Decompression
What the operation does
A layer of bursa — a lubricating sac — sits between the rotator cuff tendons and the bony roof of the shoulder. Where that space is tight and inflamed, this operation removes the inflamed bursa and shaves a small amount of bone from the undersurface of the acromion, the roof, making more room for the tendons to move. It is done through keyhole punctures.
Nothing was repaired, and that changes everything
The most useful thing to know, particularly if you know someone who had a rotator cuff repair. Their tendon was stitched back onto bone and has to heal there, which is why they were in a sling and forbidden to lift the arm for six weeks. Nothing here is healing under tension. There is no repair to protect, so movement starts immediately, the sling is for comfort rather than protection, and the recovery runs in weeks rather than months.
Stiffness is the risk here, not failure
Because there is nothing to protect, the thing that goes wrong after this operation is a shoulder that seizes up. A shoulder rested because it is sore stiffens quickly, and a stiff shoulder is harder to fix than the problem you started with. That is why the programme opens with movement in every direction and why the instinct to protect it is the wrong one.
An honest word about the evidence
This deserves saying plainly. Where this operation has been tested against placebo surgery for shoulder impingement pain, the trials have not shown a clear advantage — people improved after both. That finding changed practice, and it is why decompression is offered more selectively than it once was. It does not mean the operation is never useful, and it does not mean yours was unnecessary — but if you were expecting a guaranteed fix, the honest picture is more mixed than that.
What that evidence does not overturn
The trials looked at isolated decompression for impingement pain. They say much less about a shoulder where a large bone spur was catching, where a cuff repair was done at the same time and space was needed for it, or where the bursa was grossly inflamed. If your operation was one of those, it was addressing something specific rather than a diagnosis of exclusion. Your surgeon knows which applied.
Why pain relief can be slow
Many people expect a quick fix from a quick operation and are unsettled when the shoulder is still sore at six weeks. Improvement here is typically gradual over three to six months as the inflamed tissue settles and the cuff strengthens. Early soreness that has not resolved is not a sign the operation failed.
Night pain
Often the symptom people most want gone, and often the slowest to go. Lying flat lets the shoulder settle into an aching position and there is nothing to distract from it. Many people sleep propped up for a few weeks. It usually improves over one to three months.
What it does not fix
It does not repair a torn rotator cuff, does not treat arthritis in the shoulder or the joint at the top of it, and does not resolve pain that is coming from the neck. Where those are present alongside, the shoulder can be genuinely improved and still not be pain-free, and separating what improved from what did not is worth doing at your review.
Why the cuff strengthening matters more than the operation
Making room for the tendons helps only if the tendons then work properly. The muscles that hold the head of the arm bone down and centred are what stop it riding up into the roof in the first place, and they are usually weak by the time someone reaches surgery. The strengthening in the middle phases is doing the substantial work here — this is one of the operations where the rehabilitation matters more than the procedure.
The sling
If you were given one, it is usually for comfort in the first few days rather than protection, and coming out of it early is encouraged. Wearing it longer than needed is one of the commonest routes to a stiff shoulder.
Swelling and the punctures
Two or three small punctures around the shoulder, closed with a stitch or two. Some clear fluid leaking in the first day or two is common, because the joint was filled with fluid during the operation. The shoulder itself often feels swollen and tight for a few weeks.
If a cuff repair was done at the same time
Very common, and it changes everything — the repair becomes the pacing structure, with a sling and no active lifting for around six weeks. Where both were done, follow the rotator cuff instructions, not these. It is worth asking explicitly which operation you had if you are not sure.
Driving and work
Driving generally waits until you can control the wheel with both hands comfortably — commonly around one to two weeks for an isolated decompression. Desk-based work is often possible within a few days to a week. Work involving overhead reaching or lifting commonly returns within four to eight weeks.
How the first months usually unfold
The first two weeks are about the punctures, comfort and getting the shoulder moving in every direction. Two to six weeks brings full movement and the start of strengthening. Six to twelve weeks is where cuff and scapular strength rebuild, and where most of the improvement in pain happens. Three to six months brings overhead work and sport back. Some people continue improving out to a year.
Staying in touch with your care team
What was found in your shoulder, and whether anything was repaired alongside, changes this recovery substantially. Your surgeon knows what they saw. If something about your recovery is worrying you or does not match what is described here — particularly a shoulder that is losing movement rather than gaining it — contact your care team.
Exercises for Subacromial Decompression
An illustrated, phase-by-phase exercise program for this procedure. View the Subacromial Decompression exercise program.
Recovery education · Condition guides · Exercise programs
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This guide is general education and doesn't replace evaluation by a licensed provider. Recovery and treatment vary by person — follow the guidance of your own surgeon or care team.