De Quervain's tenosynovitis is a specific tendon problem at the base of the thumb where the abductor pollicis longus and extensor pollicis brevis tendons pass through a narrow tunnel on the thumb-side of the wrist.
When this tunnel becomes inflamed or the tendons thicken, the classic signs develop: pain when using the thumb, a tender spot an inch down from the base of the thumb, and positive Finkelstein's test - making a fist with the thumb inside and then bending the wrist towards the little finger reproduces sharp pain.
In Johor we see this most in new mothers (the specific lifting pattern used to pick up infants loads these tendons), heavy smartphone users (the thumb-reach pattern for typing), and repetitive workers (electronics assembly, food preparation, packing).
With correct conservative management, 70–80% of cases resolve without cortisone injection or surgery.
Who gets it
- Women around childbirth - hormonal factors plus the specific baby-lifting pattern (thumbs extended, wrists deviated). Peak presentation 2–6 months postpartum.
- Heavy smartphone users - the one-hand thumb-reach grip loads these tendons for hours daily.
- Electronics and assembly workers - pinch grip and repetitive wrist motion.
- Food prep workers - knives, kneading, specific grips.
- Racket sport players - forehand and backhand loading with repeated wrist action.
The conservative pathway
Step 1: the right splint (weeks 1–4)
A thumb spica splint is the single most important intervention.
It holds the thumb and wrist in a neutral, supported position that offloads the inflamed tendons.
A standard forearm splint or generic wrist brace isn't the same - it needs to include the thumb.
Worn during the day for activities that aggravate, and at night. Can often be left off for sedentary, low-load activity after the first week.
A functional spica splint costs RM 60–180 at any good pharmacy or hand therapy clinic.
A custom-moulded thermoplastic splint (more expensive, around RM 250–400) is an option for stubborn cases or if an off-the-shelf version doesn't fit well.
Step 2: task modification
For new mothers specifically - baby-lifting technique changes resolve the condition faster than any exercise.
Pick up the baby by scooping with forearms and palms, not by gripping under the armpits with thumbs extended.
Use a baby sling for carrying. Avoid "the thumb-hook grip" that new mothers develop for one-handed carrying.
For smartphone users - switch to two-handed typing, use voice-to-text, or use a phone holder.
The thumb-reach grip is the specific pathology driver.
Step 3: tendon gliding and eccentric loading (from week 2)
- Finkelstein stretch (the provocation test, performed gently below pain) - 30 seconds × 3 times daily.
- Wrist radial/ulnar deviation with light weight - 3 × 10, twice daily.
- Thumb tendon glides - thumb touching each fingertip, gentle opposition.
Step 4: strengthening (weeks 4–8)
- Grip strength progression - therapy putty, stress ball.
- Eccentric wrist and thumb loading - the eccentric phase is key for tendon adaptation.
- Functional tasks - progressively return to triggering activities with correct technique.
When cortisone injection is reasonable
If splinting plus activity modification doesn't resolve within 4–6 weeks, a cortisone injection into the first dorsal compartment has 60–80% success rate (one or two injections).
Usually done by a hand surgeon or orthopaedic surgeon.
Diabetic patients have lower injection success rates and should be warned about temporary blood sugar spikes for 1–2 weeks.
When surgery is considered
If two injections plus appropriate conservative care don't resolve symptoms, surgical release of the first dorsal compartment has high success rates.
Quick day-procedure under local anaesthetic. Return to light use in 1–2 weeks, full function in 4–6 weeks.
RM costs
- Splint: RM 60–180 (off-the-shelf), RM 250–400 (custom).
- Physiotherapy course: 4–8 sessions at RM120-250.
- Cortisone injection: RM 400–900 per injection (private).
- Surgical release: RM 3,500–7,000 (private day surgery).
How PhysioJohor matches De Quervain patients
WhatsApp us with: how long symptoms have been present, the likely triggers (childbirth, smartphone, work), side affected, and whether you've had an injection before.
We match to a physio or hand therapist with splinting capability - a well-fitted splint matters more than the exercise programme in the first 3–4 weeks.
Related guide: Physiotherapy in Johor - complete guide