Rehabilitation after isolated arthroscopic subacromial decompression — early movement, staged strengthening and return to activity.

This protocol covers the rehabilitation after an isolated arthroscopic subacromial decompression (acromioplasty, with or without removal of the inflamed bursa) with Dr Kieran Hirpara at Mater Private Hospital Rockhampton. Bring this page or its PDF to your first physiotherapy visit so your rehabilitation stays coordinated. Your rehabilitation is progressed individually by your physiotherapist through the phases below, depending on how your shoulder progresses.

Important: subacromial decompression is often performed together with a rotator cuff repair. This protocol is for an isolated subacromial decompression. If your operation also included a rotator cuff repair, follow the rotator cuff repair protocol instead — the repaired tendon sets a slower pace.

If you have any concerns about your wound after surgery, get in touch with the rooms. It is often helpful to take a photo of the wound and email it for review.

What to expect

Subacromial decompression makes more room for the rotator cuff tendons by shaving the under-surface of the acromion (the bony roof of the shoulder) and removing the inflamed bursa. Nothing is repaired that needs protecting, so early rehabilitation is about movement, not rest: the shoulder is safe to move from the first day, and moving it early is what keeps it from stiffening while it settles.

The sling you wake up with is for comfort only — it is not protecting anything. Leave it off as much as possible and wean out of it early: most people leave the sling off within the first few days, and published protocols expect it to be gone by two weeks at the latest. Do not drive while you are wearing a sling.

Your exercise program uses three kinds of movement, and your physiotherapist will guide which apply at each stage:

• Active range of motion — movement is allowed without aid or help.
• Active-assisted range of motion — using the other arm or an object to assist with moving the arm.
• Passive range of motion — completely relaxed, using the other arm or force to do 100% of the work.

The journey at a glance:

• Phase I — Early movement — roughly the first two weeks
• Phase II — Restoring your range and starting strength — week 2–6
• Phase III — Strengthening — week 6–12
• Phase IV — Return to full activity — week 12 onwards

The shoulder is usually sore rather than fragile in the early weeks, and some people find it stays uncomfortable for up to six weeks. Published guidance suggests most people feel a clear improvement in pain by about three months, and symptoms can keep improving for up to a year. The week ranges below are typical rather than fixed — your physiotherapist will progress you on how your shoulder is moving, not on the calendar.

Phase I — Early movement (Week 0–2)

A nerve block is often used during the operation, so the arm can feel numb for some hours afterwards; start your painkillers before it wears off. In the first two weeks the aims are simple: settle the pain and swelling, and get the shoulder moving within comfort. Use ice regularly for pain relief. Start moving your hand, wrist and elbow straight away, add pendulum exercises and assisted arm movements as comfort allows, and use the arm for normal light daily activities such as washing, dressing and eating. Take your painkillers before your exercises and before physiotherapy appointments. This is keyhole surgery, usually through two or three small puncture wounds closed with adhesive strips — keep them dry until healed, which usually takes 10–14 days. People in desk-based jobs commonly return to work within the first two weeks; driving can resume once you are out of the sling and can control the car comfortably — including performing an emergency stop — which is typically somewhere between one and three weeks after surgery.

For your physiotherapist:

Goals

• Settle pain and swelling
• Re-establish non-painful range of motion (active-assisted progressing to active)
• Prevent muscular atrophy and begin re-establishing dynamic stability
• Independence with light activities of daily living

Management

• Cryotherapy regularly for pain and swelling; analgesia before exercises and sessions
• Elbow, wrist, hand, neck and thoracic range-of-motion exercises from day 1
• Pendulums; pulley or wand active-assisted elevation in the scapular plane; external and internal rotation starting at 30–45° of abduction
• Progress to active range of motion as comfort allows
• Scapular setting in sitting; postural awareness
• Submaximal isometrics (flexion, extension, abduction, external and internal rotation) and gentle rhythmic stabilisation
• From week 2: heat before exercise if helpful; progress rotation work towards 90° of abduction; external and internal rotation with elastic tubing, arm at the side

Precautions

• Work within comfortable ranges — do not force or overstretch; pain is the guide
• Sling for comfort only; wean within the first days and discard by two weeks
• No driving while wearing a sling
• No heavy lifting, no lifting overhead, no jerking movements
• Avoid pushing up from a chair or bed through the operated arm for the first six weeks — the acromion has been thinned and forceful loading should be avoided while it remodels

Criteria to progress

• Pain well controlled with simple analgesia
• Swelling settling and wounds healed or healing without concern
• Comfortable active-assisted movement, with active movement returning below shoulder height

Phase II — Restoring your range and starting strength (Week 2–6)

This phase is about getting the rest of your movement back and beginning to rebuild strength. Your exercises progress from assisted movements to moving the arm actively in all directions, with most published protocols expecting full or near-full range by about six to eight weeks. Strengthening starts gently — first without weight, then with elastic bands and very light weights for the rotator cuff and shoulder blade muscles. Many people find heat before exercise and ice afterwards helpful. Moderate work (light lifting below shoulder height) typically becomes possible during this phase, guided by your physiotherapist.

For your physiotherapist:

Goals

• Full, or near-full, active range of motion in all planes by around week 6–8
• Regain and improve rotator cuff and scapular strength
• Normalise scapulohumeral rhythm and neuromuscular control
• Continue to settle pain

Management

• Progress range of motion in all planes, including behind-the-back internal rotation with gentle posterior capsular stretching
• Glenohumeral joint mobilisation (inferior, posterior and anterior glides) as indicated
• Isotonic program beginning unweighted — shoulder elevation, prone rowing, prone horizontal abduction, prone extension to neutral, sidelying external rotation, abduction to 90° — adding light weight (around 0.5–1 kg) after a week of pain-free, well-controlled repetitions
• External and internal rotation with elastic tubing; progress towards rotation work in more elevated positions as comfort allows
• Scapular neuromuscular control and lower trapezius work; trunk, core and lower-limb conditioning
• Upper-limb endurance work; heat before and ice after sessions as preferred

Precautions

• Avoid loaded work in a painful impingement range — exercises may be hard, but should not reproduce the pre-operative pain
• Do not target supraspinatus or mid-deltoid loading until it is pain-free, and avoid it if it provokes resting or night pain
• Continue to avoid pushing up through the operated arm and heavy or overhead lifting until six weeks

Criteria to progress

• Full, non-painful range of motion with minimal tenderness
• Rotator cuff strength around 4/5 on manual testing, with good scapular control

Phase III — Strengthening (Week 6–12)

With your movement back, attention turns to strength, endurance and control. Resistance work progresses from bands to weights, and exercise becomes more dynamic — including, for people returning to sport, the start of controlled plyometric work and a graduated return to training. Swimming typically resumes from about six weeks (breaststroke first, freestyle when comfortable), and medium work — light lifting below shoulder height — is usually manageable from six weeks. An interval return-to-sport program commonly starts at weeks 10–12 when strength criteria are met.

For your physiotherapist:

Goals

• Improve strength, power and endurance of the shoulder complex
• Optimise neuromuscular control, proprioception and movement patterning (no shoulder hitching)
• Prepare for a graduated return to sport and heavier work

Management

• Progress the isotonic program: isometrics → elastic bands → weights; rotator cuff, deltoid and scapular stabilisers at 2–3 sets of 8–12 repetitions
• Introduce eccentrically resisted work, closed-chain exercises and rhythmic stabilisation; proprioceptive work including weight-bearing and four-point kneeling
• Plyometric activities — two-handed drills (chest pass, side-to-side throws) progressing to one-handed drills (wall dribbles, throwing drills) towards the end of the phase
• Begin an interval sports program at weeks 10–12 if criteria are met
• Continue core and conditioning work; cryotherapy as needed

Precautions

• Exercises should be difficult but essentially pain-free — back off any work that provokes resting or night pain
• Heavy lifting and sustained overhead loading wait until around three months

Criteria to progress

• Full, pain-free active range of motion (approximately equal to the other side)
• Strength approaching the other side (published criteria range from 70% to enter dynamic training, towards 90% for return to sport)
• No pain or tenderness with progressive loading

Phase IV — Return to full activity (Week 12 onwards)

The final phase is a graduated return to heavy work, overhead tasks and sport. Heavy or repetitive lifting and sustained work above shoulder height typically resume from about three months. Return to competitive sport — particularly overhead sport — is based on meeting criteria rather than the calendar: full pain-free movement, strength close to the other side and confidence with sport-specific drills. The shoulder commonly keeps improving well beyond this phase — published guidance describes improvement continuing for up to a year.

For your physiotherapist:

Goals

• Graduated return to heavy work, overhead activity and sport
• Maintain range of motion, strength and control in the long term

Management

• Continue the strengthening program, advancing gym- and sport-specific work as tolerated
• Continue the interval sports program with a staged return to throwing and other overhead sport
• Self-managed capsular stretches and maintenance exercises as needed

Precautions

• Progression remains symptom-guided — if pain recurs, reduce load, restore comfortable movement and rebuild

Criteria to progress

• Full, non-painful range of motion
• Strength and functional testing satisfactory (around 90% of the other side in published return-to-sport criteria)
• Satisfactory clinical review

After your protocol

The phases above are adapted from published rehabilitation protocols and patient guidance for arthroscopic subacromial decompression — OrthoIndy, Sports Surgery New York, Gundersen Health System Sports Medicine, Twin Cities Orthopedics, Oxford University Hospitals NHS Foundation Trust and Royal Berkshire NHS Foundation Trust. The week ranges are typical rather than fixed, and your ongoing rehabilitation is guided individually by your physiotherapist, working with the practice, based on how your shoulder recovers. This page works alongside the practice's general recovery advice — see managing post-operative pain and wound care. For the operation itself and the condition it treats, see subacromial decompression. The evidence behind this protocol — including how it fits the trial evidence on subacromial surgery — is summarised in the evidence section, available as a PDF from the top of this page.

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Evidence & references

Arthroscopic Subacromial Decompression (Acromioplasty) — Post-operative Rehabilitation

Topic scope: Post-operative rehabilitation after isolated arthroscopic subacromial decompression (ASD / acromioplasty ± bursectomy). When a decompression is performed together with a rotator cuff repair, the repaired tendon sets the (slower) pace and the rotator-cuff-repair protocol takes priority — this page is for the isolated decompression.

Defining principle of this rehab: a subacromial decompression shaves bone and clears bursa — it repairs nothing that needs protecting. So (like a debridement, and unlike a cuff repair or stabilisation) the rehab is an early-movement pathway: a short sling for comfort only, weaned within days, motion and normal light use from day one, and a rapid return of range and function. The aim is to settle the post-operative flare and keep the shoulder moving while it quiets down — rehabilitation, not rest, does the work.

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A. THE PROCEDURE & ITS EVIDENCE CONTEXT (important)

Arthroscopic subacromial decompression removes the subacromial bursa and shaves the under-surface of the acromion to "make room" for the rotator cuff, on the impingement model of subacromial pain.

The efficacy of the bony decompression itself is one of the most debated questions in shoulder surgery, and the rehabilitation context cannot be stated honestly without it:

• CSAW (Beard et al, Lancet 2018; n=313, 3-arm) — a placebo-controlled surgical RCT. Decompression gave no clinically important benefit over arthroscopy-only (placebo) surgery, and both surgical arms were only marginally better than no treatment — a difference below the pre-specified minimal clinically important threshold.
• FIMPACT (Paavola et al, BMJ 2018) — a second placebo-controlled RCT: no benefit of ASD over diagnostic arthroscopy, and neither was superior to a structured exercise programme at 2 years.
• Cochrane review (Karjalainen et al, 2019) — high-certainty evidence that subacromial decompression provides little or no clinically important benefit over placebo for pain, function, or quality of life.

The practical consequence is that structured exercise/physiotherapy is first-line for subacromial pain, and ASD is now a selective operation — reserved for patients who have failed an adequate non-operative programme or who have a specific mechanical lesion. This does not make a well-selected decompression valueless, but it explains why the post-operative emphasis is on early movement and rehabilitation, which is what reliably drives recovery.

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B. POST-OPERATIVE PHASED TIMELINE (isolated decompression)

A nerve block is commonly used (numb arm for some hours — start analgesia before it wears off). Keyhole wounds; desk-based work commonly resumes within ~2 weeks.

Phase	Window	Sling	ROM / use	Strengthening	Notes
I — Early movement	Week 0–2	Comfort only, off within days (gone by ≤ 2 wk)	Hand/elbow immediately; pendulums + assisted motion as comfort allows; normal light daily use from day 1	—	Settle pain/swelling; ice; analgesia before exercise. No driving while in sling (typically back ~1–3 wk once out of sling + safe emergency stop)
II — Restore range / start strength	Week 2–6	Off	Progress to full active ROM all planes	Begin gentle cuff + scapular strengthening	Range comfortable below shoulder height; most daily activity resumed
III — Strengthening	Week 6–12	Off	Full	Progressive cuff/scapular loading, band → light weight	Heavier and overhead loading built gradually
IV — Return to full activity	Week 12 +	Off	Full	Advanced/sport-specific	Full unrestricted activity typically ~3 months

There is no construct-protection branch in the isolated decompression — the only branch is if a rotator cuff repair was also done, which converts recovery to the protected cuff-repair pathway.

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C. KEY CONTROVERSIES / EVIDENCE QUALITY

1. Does the bony decompression add anything? Two placebo-controlled RCTs (CSAW, FIMPACT) and a Cochrane review say it adds little or nothing over placebo or exercise for subacromial pain. Strong (RCT/SR). → exercise-first, selective surgery.
2. Decompression added to a cuff repair — multiple RCTs show no added benefit of routine acromioplasty at the time of arthroscopic cuff repair. Moderate–strong.
3. The post-operative rehab protocol itself — consensus/expert (institutional protocols), no defining rehab RCT; phase timings are typical, not trial-derived. Weak/consensus.

(Patient-facing note: the efficacy debate belongs in this clinician evidence section, not the patient protocol page — surfaced here for the surgeon's awareness.)

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D. EVIDENCE STRENGTH FLAGS (summary)

• STRONG (RCT / SR): ASD provides little/no benefit over placebo surgery or exercise (CSAW Lancet 2018; FIMPACT BMJ 2018; Cochrane Karjalainen 2019); no benefit of added acromioplasty at cuff repair.
• MODERATE: early-motion rehabilitation after isolated decompression (institutional cohorts / consensus protocols, consistent ~3-month recovery).
• WEAK / CONSENSUS: the specific phase/timeline structure of the post-op protocol.

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CITATIONS

RAG corpus (180,000+ Orthopaedic articles)

• Is acromioplasty justifiable? Orthop Traumatol Surg Res. 2019. DOI: 10.1016/j.otsr.2019.10.002
• Indications for Arthroscopic Subacromial Decompression: a Level V evidence clinical guideline. Arthroscopy. 2019. DOI: 10.1016/j.arthro.2019.06.012
• The role of subacromial decompression in patients undergoing arthroscopic repair of full-thickness rotator cuff tears. Arthroscopy. 2012. DOI: 10.1016/j.arthro.2011.11.022
• Arthroscopic repair of full-thickness rotator cuff tears with and without acromioplasty (RCT). Am J Sports Med. 2014. DOI: 10.1177/0363546514529091
• A comparative study of arthroscopic débridement versus repair for Ellman grade I partial cuff tears. J Shoulder Elbow Surg. 2020. DOI: 10.1016/j.jse.2020.03.006

Landmark trials / reviews (URLs)

• Beard DJ, et al. Arthroscopic subacromial decompression for subacromial shoulder pain (CSAW): placebo-controlled 3-group RCT. Lancet. 2018. https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(17)32457-1/fulltext
• Paavola M, et al. (FIMPACT) Subacromial decompression versus diagnostic arthroscopy for shoulder impingement: randomised, placebo surgery controlled trial. BMJ. 2018;362:k2860. https://www.bmj.com/content/362/bmj.k2860
• Karjalainen TV, et al. Subacromial decompression surgery for rotator cuff disease. Cochrane Database Syst Rev. 2019. https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD005619.pub3/full

Published rehab protocols (basis for the phase structure)

• Kendall C. Arthroscopic Subacromial Decompression Physical Therapy Protocol. OrthoIndy. https://www.orthoindy.com/wp-content/uploads/Arthroscopic-Subacromial-Decompression.pdf
• Strauss EJ. Rehabilitation Protocol: Arthroscopic Subacromial Decompression / Distal Clavicle Excision. Sports Surgery New York. https://www.sportssurgerynewyork.com/pdf/arthroscopic-subacromial-decompression-distal-clavicle-excision-rehab-protocol.pdf
• Gundersen Health System Sports Medicine. Subacromial Decompression / Acromioplasty Rehabilitation Program. https://www.gundersenhealth.org/sites/default/files/2022-06/Sports-Medicine-Protocol-Subacromial-Decompression-Acromioplasty.pdf
• Meisterling RC. Arthroscopic Subacromial Decompression Rehabilitation. Twin Cities Orthopedics. https://tcomn.com/wp-content/uploads/2016/06/Arthroscopic-Subacromial-Decompression-Rehabilitation.pdf
• Scott-Dempster C, Harper J. Outpatient Post-operative Physiotherapy Guidelines: Sub-Acromial Decompression. Oxford University Hospitals NHS FT. https://www.ouh.nhs.uk/media/zidppie2/sub-acromial-decompression.pdf
• Royal Berkshire NHS FT. Arthroscopic subacromial decompression and/or ACJ excision: discharge advice. https://www.royalberkshire.nhs.uk/media/smegtn3c/arthroscopic-subacromial-decompression-and-or-acromioclavicular-joint-excision-discharge-advice_jul24.pdf