De Quervain's Tenosynovitis: Wrist Pain & Physio

Understanding De Quervain's Tenosynovitis

De Quervain's tenosynovitis is a painful condition affecting the tendons on the radial (thumb) side of the wrist. Specifically, it involves inflammation and thickening of the synovial sheath surrounding two tendons: the Abductor Pollicis Longus (APL) and the Extensor Pollicis Brevis (EPB), which pass through the first dorsal compartment of the wrist. As the sheath thickens, friction increases during thumb movements, leading to localized pain, swelling, and sometimes a locking sensation.

Repetitive hand and wrist movements, such as lifting, gripping, pinching, or typing, are common triggers. It is frequently observed in postpartum mothers (often called "baby wrist") due to the repetitive lifting of an infant with wide-spread thumbs. A guided program of physiotherapy and pain management is critical to reduce sheath swelling, restore tendon gliding, and rebuild wrist strength.

Diagnostic Standard: The Finkelstein Test

Clinicians diagnose De Quervain's tenosynovitis primarily using the Finkelstein test, which reproduces pain in the irritated tendons:

• Execution: The patient bends their thumb across the palm of their hand. They then fold their fingers down over the thumb, making a fist. Finally, they gently bend their wrist sideways toward the little finger (ulnar deviation).
• Response: A positive test is indicated by sharp pain over the radial styloid process (the bony bump on the side of the wrist near the base of the thumb).

Phase-by-Phase Physiotherapy Protocol

Rehabilitation is structured to quiet the reactive tissue before gradually restoring strength to prevent recurrence:

Phase 1: Splinting, Activity Modification, and Pain Control (Weeks 0–4)

The initial goal is to reduce friction in the first dorsal compartment.

• Thumb Spica Splinting: Wearing a custom-fitted thumb spica splint is critical. Unlike a standard wrist brace, a thumb spica immobilizes the wrist and the lower joints of the thumb, preventing the APL and EPB tendons from contracting and rubbing against the swollen sheath. The splint is typically worn during all pinching or lifting tasks and at night.
• Activity Modifications: Avoid lifting objects with palms facing down (which increases radial deviation stress). Lift with a neutral wrist (palms facing inward). Avoid pinching tasks using the thumb and index finger.
• Modalities: Ice application, ultrasound therapy, and manual soft tissue release of the forearm muscles help manage acute pain.

Phase 2: Gentle Stretching and Isometric Loading (Weeks 4–6)

Once pain at rest has settled, passive and active-assisted tendon gliding exercises begin:

• Passive Thumb Gliding: Gently pull the thumb across the palm into flexion until a mild stretch is felt at the wrist. Hold for 15 seconds, and repeat 5 times.
• Isometric Radial Deviation: Hold your hand with the thumb facing upward. Place your other hand on top of the thumb and press upward, resisting the movement. Hold for 10 seconds, repeat 5 times.
• Passive Ulnar Deviation Stretch: Support your forearm on a table. Gently push the hand downward into ulnar deviation (toward the pinky side) to stretch the extensor tendons. Hold for 20 seconds.

Phase 3: Eccentric and Functional Strengthening (Weeks 6–10+)

As splint use is phased out, rehabilitation focuses on rebuilding wrist and hand capacity:

• Eccentric Radial Deviation: Hold a light dumbbell with your thumb facing up, wrist over the edge of a table. Use your healthy hand to lift the weight, then slowly lower the dumbbell (eccentric phase) over 4 seconds using the injured wrist. Perform 3 sets of 10 repetitions.
• Thumb Extension Resistance: Place a rubber band around your fingers and thumb. Slowly open your hand against the band's resistance, focusing on thumb extension. Perform 3 sets of 15 repetitions.
• Grip and Pinch Strengthening: Use therapeutic putty to perform pinch and squeeze exercises to rebuild hand grip strength.

Rehabilitation Progression Comparison Table

| Phase | Goal | Key Interventions | Splinting Status | Progress Criteria | | :--- | :--- | :--- | :--- | :--- | | Phase 1: Protection | Calm inflamed tendon sheath | Custom thumb spica, ice, lifting modifications | Constant wear (except hygiene) | Pain at rest stable < 2/10 | | Phase 2: Gliding | Restore passive range & start isometric activation | Passive stretches, isometric radial deviation | Wear during heavy lifting/activity | Active range of motion pain-free | | Phase 3: Strengthening | Rebuild wrist & thumb capacity | Eccentric radial deviation, thumb band extension, putty pinch | Discontinue splint | Grip strength symmetrical |

Medical and Surgical Considerations

For patients who do not respond to conservative physiotherapy within 6 to 8 weeks, a corticosteroid injection into the first dorsal compartment sheath is highly effective at reducing swelling and curing the condition. In rare, chronic cases that do not resolve with conservative or injection therapy, a minor surgical procedure called a De Quervain's release may be performed. In this surgery, the surgeon cuts the roof of the tight tendon sheath to create more room for the tendons to glide freely. Post-surgical physiotherapy is then required to manage scarring and restore wrist range of motion.