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Shoulder hydrodistension - the frozen shoulder without surgery.

An image-guided injection that fills the glenohumeral joint with 30–50 ml of saline, steroid and local anaesthetic to stretch the contracted capsule. Outpatient, wide awake, walk in and walk out - and, paired with physio, the non-surgical answer for most stage 2 and 3 frozen shoulders.

See indicative pricing
A radiographer guides a patient onto the bed of an advanced 3 Tesla MRI scanner in a London imaging suite

Indicative pricing

What a private shoulder hydrodistension costs in the UK.

Indicative ranges across our partner MSK radiology suites.

In short

£650–£1,200, home in under an hour.

Procedure Indicative range
Image-guided hydrodistension (US or fluoroscopy) £650–£1,200
Hydrodistension + 12-session physio package £1,200–£2,000
Repeat / follow-up distension or steroid injection £450–£800
Bilateral hydrodistension (both shoulders, same visit) £1,100–£1,900
Diagnostic ultrasound of shoulder (if not yet done) £250–£420
MSK radiology or orthopaedic consultation £220–£380
MRI shoulder (if arthritis or cuff tear suspected) £450–£750

Prices vary by hospital, by radiologist and by whether physiotherapy is bundled in. The bundle is what we usually recommend - the procedure without the physio is much less likely to hold its gains at six weeks. NHS hydrodistension is available at some pain and MSK clinics but waits commonly run to several months.

The problem

The right stage, the right volume, and the physio window afterwards.

Hydrodistension is where private MSK quietly over-promises - done too late in the frozen phase, with too little volume, without a physio waiting on the other side. We fix all three before you book.

  • Is it really adhesive capsulitis?

    A rotator cuff tear or early arthritis can look like a stiff shoulder. Ultrasound or MRI first - distend the capsule only when the diagnosis is clean.

  • Enough volume to stretch, not just soothe

    Thirty to fifty millilitres is what mechanically opens the capsule. Below that and you have a plain cortisone shot dressed up in a bigger syringe.

  • Physio in the diary before the needle

    The stretch window closes within days. A shoulder physio on standby for 24–48 hours later is the single biggest determinant of the final result.

When it helps

When hydrodistension is the right next step.

The situations where distension delivers, plus the one red flag that means A&E rather than a routine radiology appointment.

  • Stage 2 adhesive capsulitis

    The painful, freezing phase - night pain still dominates and range is beginning to close down. Distension eases pain and reopens the capsule before it seizes.

  • Stage 3 adhesive capsulitis

    The frozen phase - pain has settled but the shoulder is stuck. Distension delivers most of its benefit here, coupled with aggressive stretching.

  • Diabetic frozen shoulder

    Capsulitis in type 1 and type 2 diabetes is more severe and longer-lasting. Distension is a lower-risk option than manipulation in this group.

  • Failed cortisone injection alone

    A landmark or ultrasound-guided steroid shot that eased pain but did not restore movement - the volume of a distension is what stretches the capsule.

  • Contralateral or recurrent capsulitis

    A second frozen shoulder on the other side, or a recurrence in the same shoulder, where the pattern is known and early distension shortens the course.

  • Occupational urgency

    A surgeon, dentist, hairdresser or overhead worker who cannot afford the 12–24 month natural history and wants to compress recovery into weeks.

  • Pre-op alternative to arthrolysis

    For many patients hydrodistension delivers 60–70 percent of the benefit of surgical release, in the X-ray suite, at a fraction of the cost. Worth trying first.

  • Red flag: hot swollen joint with fever

    A shoulder that is red, hot and severely painful with fever is not a frozen shoulder - septic arthritis is a same-day A&E presentation, never a routine distension booking.

Procedure options

Guidance, approach and mix - all pick-your-own.

What each variant of hydrodistension involves - imaging modality, needle route into the joint, and the technique the radiologist uses to distend the capsule.

  • Ultrasound-guided hydrodistension

    The workhorse in the UK. Real-time needle visualisation into the rotator interval or posterior recess, no ionising radiation, quick set-up. Preferred for most patients.

  • Fluoroscopy-guided hydrodistension

    Contrast confirms intra-articular placement on X-ray before the saline goes in. Useful in higher BMI, difficult anatomy, or where the capsule is very tight and back-pressure needs monitoring.

  • Anterior rotator interval approach

    Needle in from the front, into the rotator interval between subscapularis and supraspinatus. Well-tolerated, direct route into the joint.

  • Posterior glenohumeral approach

    Needle in from behind, into the posterior recess. Often more comfortable for the patient and avoids the biceps tendon and subscapularis.

  • Distension with capsular rupture

    The classic technique - saline is infused until the capsule audibly and visibly ruptures, releasing back-pressure. Historically thought to be the mechanism of benefit.

  • Distension without deliberate rupture

    Newer evidence suggests slow high-volume distension without forced rupture works equally well and may hurt less afterwards. Radiologist preference varies.

  • Distension with steroid and local anaesthetic

    Standard mix - 30–50 ml of saline with 40 mg triamcinolone or methylprednisolone and 5–10 ml of 1% lidocaine or 0.25% bupivacaine.

  • Repeat distension at 6–12 weeks

    A second procedure if range slips or pain returns. Two well-timed distensions often avoid the need for arthrolysis in resistant cases.

Safety and recovery

What to expect afterwards - honestly.

Hydrodistension is a low-risk outpatient procedure. The things worth planning are the physiotherapy window, the diabetic response, and what happens if range slips at six weeks.

  • Local anaesthetic only, no GA

    Hydrodistension is done wide awake with skin infiltration only. You walk in, walk out, and drive yourself home if you feel able. No fasting, no sedation, no ward bed.

  • Injection-site pain and vasovagal

    A tight, aching stretch as the joint fills is expected and settles within an hour. A vasovagal faint on the table is uncommon and short-lived - one reason we keep you supine for the fill.

  • Post-procedure flare in the first 48 hours

    Around one in five patients has a steroid or distension flare - a sharper pain for 24–48 hours before the anti-inflammatory kicks in. Paracetamol, ice and reassurance is usually enough.

  • Infection is very rare

    Septic arthritis after image-guided injection is under 1 in 10,000 with sterile technique. Fever, spreading redness or a swollen hot joint after 48 hours needs the same-day team, not a routine call.

  • Facial flushing and short blood-sugar rise

    The steroid can cause a warm flush and a transient rise in blood glucose over 24–72 hours. Diabetic patients should monitor closely; nothing else usually changes.

  • Tendon or nerve injury is negligible under guidance

    The whole point of ultrasound or fluoroscopy is to keep the needle away from the biceps tendon, subscapularis and axillary nerve. Rates are effectively zero in trained hands.

  • Range slips at 6 weeks in a minority

    Around one in three patients loses some of the gained range by six weeks. A second distension or a step up to arthrolysis rescues most. Skipping physio is the biggest predictor of slip.

  • Diabetic recovery is slower

    Type 1 and type 2 diabetics regain range more slowly and are more likely to need a second procedure. We plan a longer physio block and closer follow-up from the outset.

  • Red flags after the procedure

    Fever above 38, spreading redness, calf pain, breathlessness or a hot swollen shoulder that will not settle after 48 hours need the same-day team or A&E - never a routine call.

Reading your procedure note

Your procedure note in four parts. Read the last one first.

Whichever guidance was used - ultrasound or fluoroscopy - the note the radiologist sends you keeps to the same shape.

A UK consultant MSK radiologist reviewing a patient's shoulder injection report

A quiet reminder

Radiology language is precise and can read coldly - we translate it for you.

If you would like us to talk you through the procedure note and the physio protocol before your review, just ask.

  1. 01 Header

    Indication, side and guidance used

    Confirmed adhesive capsulitis stage, the shoulder treated, and whether ultrasound or fluoroscopy guided the needle.

  2. 02 Technique

    Approach, volume and mix

    Anterior rotator interval or posterior recess, total volume infused, steroid and local anaesthetic dose, and whether the capsule reached rupture or was held short of it.

  3. 03 Findings

    Capsular behaviour and intra-articular notes

    Back-pressure during infusion, capsular thickness on scan, any coexisting cuff or calcific pathology and how it might affect the rehab plan.

  4. 04 Impression

    Physio plan and follow-up trigger

    Read this first: when physio starts, the six-week milestones, and the plan if range slips - repeat distension, arthrolysis, or watchful stretching.

Recognised by major UK insurers

BupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealix

Hydrodistension is usually covered when adhesive capsulitis is documented and conservative treatment has been tried.

Frequently asked

Everything we get asked about shoulder hydrodistension.

Quick answers on how it works, what it costs, and how it compares to a plain cortisone shot or arthrolysis.

  • What actually happens during a shoulder hydrodistension?

    You lie on the table, awake. The skin is cleaned and numbed with local anaesthetic. Under ultrasound or fluoroscopy, a fine needle is placed into the glenohumeral joint. Between 30 and 50 ml of sterile saline mixed with a long-acting steroid and local anaesthetic is then slowly infused to distend and stretch the contracted capsule. The whole thing takes 20–40 minutes and you walk out afterwards.

  • Is hydrodistension the same as a cortisone injection?

    No. A plain cortisone shot delivers a few millilitres of steroid into the joint to calm inflammation. Hydrodistension adds a much larger volume of saline - 30 to 50 ml - that mechanically stretches the tight capsule. It is that volume, not the steroid alone, that reopens range in stage 2 and stage 3 frozen shoulder.

  • Does hydrodistension replace arthrolysis surgery?

    For many patients, yes. Good-quality evidence suggests hydrodistension paired with physiotherapy delivers roughly 60–70 percent of the benefit of arthroscopic capsular release, at a fraction of the cost and without a general anaesthetic.

  • How much does a private shoulder hydrodistension cost in the UK?

    A follow-up distension or steroid injection is £450–£800. NHS availability exists at some pain and MSK clinics but waiting lists commonly run to several months.

  • How soon will I feel better and how long does the benefit last?

    The local anaesthetic gives immediate pain relief on the table. A steroid or distension flare is common in the first 48 hours, then the anti-inflammatory kicks in over five to seven days and range starts to improve. Peak benefit sits at four to six weeks and, coupled with physio, typically holds for six to twelve months while the underlying capsulitis resolves.

  • Can I have hydrodistension on the NHS?

    Yes at some centres - usually via pain clinics or MSK radiology departments - but access is patchy and typical waits run to three to six months, often longer. Private hydrodistension is usually booked within one to two weeks. We are happy to advise which route fits your urgency, and to confirm insurer cover if you have it.

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