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Health condition · Clinically reviewed

De Quervain tenosynovitis, splinting, injection and when surgery fits.

Also called Mummy\'s thumb, Mother\'s wrist and Blackberry thumb. A common, painful thumb-side wrist condition that responds well to a stepped plan.

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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against BSSH, AAOS and peer-reviewed hand-surgery literature you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK practice including thumb spica splinting, ultrasound-guided injection and awareness of sub-compartmentation.

Key facts

De Quervain tenosynovitis at a glance.

The essentials, in plain English. What it is, who gets it and how it is treated in the UK today.

  • What it is

    A stenosing tenosynovitis of the first dorsal compartment of the wrist, affecting the APL and EPB tendons on the thumb side.

  • Also called

    De Quervain's syndrome, Blackberry thumb, Gamer's thumb, Mummy's thumb and Mother's wrist.

  • Who gets it

    Women 6 to 10 times more than men, peaking in the 30s and 40s. Bilateral in around 20 to 30 percent of cases.

  • Common triggers

    Pregnancy and postnatal baby-lifting, repetitive thumb use, smartphone and gaming, musicians and manual trades.

  • Foundation therapy

    Thumb spica splint, activity modification and NSAIDs are the first step for most patients.

  • When to escalate

    Corticosteroid injection into the first dorsal compartment works in 70 to 90 percent. Surgery is reserved for failure.

Why this guide matters

A stepped plan, not a lifetime of wrist pain.

De Quervain tenosynovitis is common, well understood and, with the right ladder, usually settled within weeks. Three points shape the rest of this page.

  • Splinting is foundational

    A proper thumb spica splint, worn day and night for 3 to 6 weeks, is the single most effective first step for most patients.

  • Injection is the pivot point

    Ultrasound-guided steroid injection into the first dorsal compartment settles 70 to 90 percent of cases and can be repeated.

  • Surgery is a targeted option

    Failed conservative care and injection is the trigger for a hand-surgeon opinion, especially when a sub-compartment is suspected.

How the diagnosis is made

From first twinge to a clear plan.

The steps a UK GP, physiotherapist or hand surgeon will normally follow, in order, so you know what to expect and why.

  1. 01

    Assessing

    History and triggers

    Onset, occupation, hobbies, pregnancy or postnatal status and any previous wrist injury or injection.

  2. 02

    Assessing

    Radial-sided wrist exam

    Tenderness and swelling over the radial styloid and the first dorsal compartment, with grip and pinch testing.

  3. 03

    Assessing

    Finkelstein test

    Pain over the compartment on ulnar deviation with the thumb tucked inside a closed fist. The classical bedside sign.

  4. 04

    Confirming

    Eichhoff and Whipple tests

    Passive thumb flexion into the palm then ulnar deviation, and resisted thumb abduction, help confirm the diagnosis.

  5. 05

    Confirming

    Rule out mimics

    Consider CMC joint osteoarthritis, scaphoid fracture, intersection syndrome, Wartenberg syndrome, carpal tunnel and cervical radiculopathy.

  6. 06

    Preparing

    Targeted imaging

    Ultrasound is selective and can confirm tenosynovitis, show fluid and thickening, and identify a septum that guides injection.

  7. 07

    Preparing

    Bloods if inflammatory

    RF, anti-CCP, ANA and inflammatory markers if a rheumatological cause is suspected, especially in bilateral or recurrent cases.

Typical timeline: most patients have a diagnosis and plan at the first appointment.

Symptoms

What De Quervain tenosynovitis actually feels like.

A classic mix of thumb-side pain, focal swelling and grip weakness. And the features that mean it is time to escalate.

  • Radial-sided wrist pain

    A well-localised ache over the thumb side of the wrist, worse with thumb and wrist movement.

  • Tender first dorsal compartment

    Focal tenderness and often a visible or palpable swelling just proximal to the base of the thumb.

  • Pain lifting or gripping

    Everyday tasks flare it, from lifting a baby or kettle to opening jars and turning door handles.

  • Weakness of grip and pinch

    Grip strength drops because loading the tendons is painful, not because muscle power is lost.

  • Crepitus or occasional triggering

    Some patients feel creaking, catching or a brief triggering sensation as the tendons glide.

  • Radiating pain

    Discomfort can spread up the forearm along the line of the tendons and down into the thumb.

  • Pregnancy and postnatal onset

    Hormonal shifts and repetitive baby-lifting are a classic setting - often resolves as demands ease.

  • Red flag - failed conservative care

    Persistent pain despite splinting and one or two injections warrants a hand-surgeon opinion.

Treatment

How De Quervain tenosynovitis is treated in the UK.

Splinting, activity change and NSAIDs first. Ultrasound-guided injection next. Surgical release when needed.

  • Activity modification

    Reducing thumb-loaded tasks, adjusting phone habits and changing baby-holding technique often turns the corner.

  • Thumb spica splint

    Rigid or semi-rigid splint holding the wrist and thumb in neutral, worn for 3 to 6 weeks including at night. Strong evidence.

  • NSAIDs

    Short course of oral ibuprofen or naproxen, or topical diclofenac gel, alongside splinting and rest.

  • Physiotherapy

    Ice or heat, graded tendon-loading and thumb-wrist mobility work as symptoms settle.

  • Corticosteroid injection

    Injected into the first dorsal compartment, ideally ultrasound-guided. Success in 70 to 90 percent and can be repeated once or twice.

  • Ergonomic and workplace changes

    Keyboard, mouse and tool adjustments plus Access to Work support to reduce repetitive thumb loading.

  • Surgical release

    Open or minimally invasive release of the first dorsal compartment when conservative care and injection have failed.

  • Post-op rehab

    Early gentle mobilisation, guided physiotherapy and staged return to activity over 4 to 6 weeks.

What this guide is based on

The sources behind every claim on this page.

UK and international specialist society standards and peer-reviewed hand-surgery literature, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP, physiotherapist or hand surgeon knows your wrist and history and can tell you which parts apply to you. If in doubt, get seen.

  • British Society for Surgery of the Hand (BSSH). Patient information on De Quervain's tenosynovitis.

  • American Academy of Orthopaedic Surgeons (AAOS). De Quervain's tendinosis clinical guidance.

  • NICE Clinical Knowledge Summaries. Tenosynovitis and wrist pain assessment.

  • Peer-reviewed hand-surgery literature on sub-compartmentation and injection outcomes.

Red flags

When wrist pain needs specialist attention.

Most De Quervain tenosynovitis settles in primary care. These are the situations where a hand surgeon, rheumatologist or same-day review is needed.

  • Failed splinting and injection

    Persistent pain after 6 to 12 weeks of splinting and one or two well-placed injections is a clear signal for hand-surgery review.

  • Sub-compartmentation missed

    A separate compartment for EPB is present in up to half of patients and is the most common reason injection or surgery fails.

  • Suspected scaphoid fracture

    Fall on an outstretched hand with anatomical snuffbox tenderness needs urgent X-ray and consideration of MRI.

  • Inflammatory arthritis features

    Bilateral tenosynovitis, morning stiffness or other joint involvement should prompt rheumatology bloods and review.

  • Wartenberg syndrome overlap

    Numbness or altered sensation over the dorsal thumb and index suggests superficial radial nerve entrapment rather than pure tenosynovitis.

  • Postnatal red flags

    Severe pain preventing safe baby-lifting deserves early injection and clear technique advice, not simply reassurance.

  • Diabetes and recurrent disease

    Diabetes and repeated flares reduce injection success and lower the threshold for surgical release.

  • Occupational risk

    Musicians and manual workers with unremitting symptoms need occupational-health input and workplace adjustments to protect their livelihood.

  • Sudden severe swelling or infection

    Hot, red, spreading swelling with systemic symptoms is not tenosynovitis and needs same-day assessment.

Living with it

A treatable condition, with a clear ladder.

Four things that make the biggest difference day to day. A proper splint, better thumb habits, protected baby-lifting and knowing when to inject.

A quiet reminder

Rest the tendons, don\'t abandon the hand.

Splinting is about giving the first dorsal compartment a chance to calm. Gentle movement, in the splint, keeps the rest of the hand strong.

  1. 01 Splint

    Wear the thumb spica properly

    A well-fitting rigid or semi-rigid splint, worn day and night for the first few weeks, does more than any product on a shelf.

  2. 02 Habits

    Change how you use your thumb

    Two-handed lifts, hooking rather than pinching, and phone-holding tweaks stop repeatedly re-injuring the same tendons.

  3. 03 Postnatal

    Protect the wrist while lifting baby

    Scoop under the bottom with a flat hand, keep wrists neutral, and use the forearm as a shelf where you can.

  4. 04 Escalate

    Don't wait too long to inject

    If splinting and NSAIDs haven't worked by 6 to 8 weeks, an ultrasound-guided injection often ends the cycle quickly.

Frequently asked

Everything we get asked about De Quervain tenosynovitis.

Quick answers on splinting, injection, postnatal cases and when surgery is right.

  • What is De Quervain tenosynovitis?

    It is a stenosing tenosynovitis affecting the first dorsal compartment of the wrist, where the APL and EPB tendons run over the radial styloid. The tendon sheath thickens and swells, causing pain with thumb and wrist movement.

  • Why does it happen after having a baby?

    Postnatal hormonal changes, breastfeeding and the repeated lifting and scooping of a growing baby all load the thumb tendons in the same way. It is common enough that Mummy's thumb and Mother's wrist are widely used names for it.

  • What is the Finkelstein test?

    The examiner asks you to tuck your thumb inside a closed fist, then gently deviates your wrist towards the little finger. Sharp pain over the first dorsal compartment is a positive test and strongly suggests De Quervain tenosynovitis.

  • Do I need a scan?

    Usually not. The diagnosis is clinical. Ultrasound is helpful when the picture is unclear, to guide an injection, or to look for sub-compartmentation. X-ray is used when a scaphoid fracture or CMC joint arthritis needs ruling out.

  • How well do steroid injections work?

    An ultrasound-guided injection into the first dorsal compartment settles symptoms in around 70 to 90 percent of patients. It can be repeated once or twice, and is considered safe in breastfeeding when discussed with your clinician.

  • When is surgery needed?

    Surgical release is offered when splinting, activity change and one or two injections have failed. A hand surgeon divides the first dorsal compartment and looks for any separate sub-compartment. Return to normal activity is typically 4 to 6 weeks.

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