De Quervain Tenosynovitis
Stenosing tenosynovitis of the first dorsal extensor compartment (APL and EPB) causing radial wrist pain with thumb use.
Also known as: De Quervain, de Quervain tenosynovitis, first dorsal compartment tenosynovitis, mother's wrist, baby wrist
Overview
Stenosing tenosynovitis of the first dorsal extensor compartment of the wrist, which contains the abductor pollicis longus (APL) and extensor pollicis brevis (EPB). Repetitive thumb and wrist movements produce thickening of the tendon sheath and pain at the radial styloid.
Epidemiology
More common in women, particularly 30-50 years and especially postpartum (caring for infants — 'mother's wrist'). Bilateral in many patients.
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Risk factors
- Female sex, age 30-50
- Pregnancy and postpartum period (lifting infants)
- Repetitive forceful gripping with ulnar deviation — texting, video gaming, racquet sports, golf, knitting
- Inflammatory arthritis (RA, psoriatic)
- Anatomic variants — septated compartment with EPB in separate subcompartment
- Diabetes mellitus
Pathophysiology
Repetitive gliding of APL and EPB through a narrow fibro-osseous tunnel produces myxoid degeneration and thickening of the tendon sheath. The condition is more accurately a tendinopathy with fibrocartilaginous metaplasia than a true inflammatory tenosynovitis.
Clinical presentation
Symptoms
- Insidious or post-activity onset of pain along the radial side of the wrist
- Pain with thumb movement, lifting an infant, grasping, twisting jars, wringing cloths
- Pain may radiate proximally up the forearm or distally into the thumb
- Swelling and a palpable thickening over the radial styloid
Signs / physical exam
- Tenderness and often visible swelling over the first dorsal compartment at the radial styloid
- Positive Finkelstein test — pain reproduced when the patient grasps the thumb in the fist and the examiner deviates the wrist ulnarly
- Positive Eichhoff test (modified Finkelstein — patient makes a fist over flexed thumb, then ulnar deviation)
- Pain with resisted thumb abduction or extension
- Crepitus rarely palpable
Differential diagnosis
- Thumb basal joint (CMC) osteoarthritis — Pain at the base of the thumb (carpometacarpal joint), positive grind test, X-ray with joint space narrowing; common in postmenopausal women
- Intersection syndrome — Pain more proximal (~4-8 cm proximal to radial styloid) at crossing of first and second dorsal compartments
- Wartenberg syndrome (superficial radial nerve) — Sensory symptoms over dorsum of thumb; negative Finkelstein
- Scaphoid fracture — Snuffbox tenderness after fall on outstretched hand
- Carpal tunnel syndrome — Volar nocturnal paresthesias, median nerve distribution
- Trigger thumb (flexor pollicis longus stenosing tenosynovitis) — Volar thumb pain with locking/catching
Diagnostic workup
Labs
- Not indicated unless inflammatory arthritis suspected
Imaging
- Generally NOT needed — clinical diagnosis
- Ultrasound — sheath thickening, fluid, possible septation; useful for guided injection
- Plain radiographs only to exclude alternative diagnoses (CMC OA, scaphoid fracture)
Diagnostic algorithm
| Feature | De Quervain Tenosynovitis | Thumb CMC OA |
|---|---|---|
| Location of tenderness | Radial styloid (dorsal) | Base of thumb / CMC joint |
| Provocative test | Finkelstein / Eichhoff | Grind test (axial + rotation) |
| X-ray findings | Often normal | Joint space narrowing, osteophytes |
| Typical demographic | Postpartum women, repetitive thumb use | Postmenopausal women |
| First-line treatment | Splint, NSAIDs, steroid injection | NSAIDs, splint, CMC injection |
| Definitive treatment | First dorsal compartment release | CMC arthroplasty / suspensionplasty |
Treatment
First-line
- Activity modification — minimize repetitive thumb/wrist motions
- Thumb spica splint (forearm-based, leaving IP joint free) for 4-6 weeks
- Ice after provocative activity
- NSAIDs — ibuprofen, naproxen, meloxicam — short course
- Topical NSAIDs (diclofenac gel) — particularly useful in pregnancy/postpartum
Second-line / adjunct
- Corticosteroid injection into the first dorsal compartment — high success rate (≥80%) for symptom resolution; ultrasound guidance improves accuracy especially with septation; ensure injection enters the EPB subcompartment if present
- Surgical release of the first dorsal compartment — reserved for failure of conservative care after 6-12 weeks; identify and release any EPB subcompartment to avoid persistent symptoms
- Hand therapy
Complications
- Persistent or recurrent symptoms — frequently due to missed EPB subcompartment at the time of injection or surgery
- Cutaneous atrophy or depigmentation from steroid injection (warn patients, especially darker-skinned)
- Postoperative superficial radial nerve injury
- Volar subluxation of tendons after over-aggressive surgical release
- Recurrence with resumption of provoking activities
PANCE pearls
- Postpartum women lifting infants are a classic patient — counsel on lifting technique with palm under the infant rather than thumb-out gripping.
- Differentiate from thumb CMC OA: De Quervain tender at the radial styloid, CMC OA tender at the base of the thumb and positive grind test.
- Up to one-third of patients have a septated first dorsal compartment — failure of injection often reflects EPB not being reached.
- Steroid injections are highly effective; surgery is reserved for refractory cases.
- In pregnancy, topical NSAIDs and splinting are preferred over oral systemic therapy.
References
- ASSH 2020 — American Society for Surgery of the Hand — Clinical Practice Statement: De Quervain Tenosynovitis (2020)
- AAFP 2015 — Hand and Wrist Injuries: Common Problems and Solutions (Wolfe et al., Am Fam Physician 2015)
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