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This page describes products and general use; it is not medical advice.
A carpal tunnel splint, also called a carpal tunnel syndrome splint or wrist splint, is a wearable support that holds the wrist straight. It is used by people with carpal tunnel syndrome, and by the clinicians who advise them.
What a carpal tunnel splint is
The NHS describes a wrist splint as “something you wear on your hand to keep your wrist straight”, and says it helps relieve pressure on the nerve. The American Academy of Orthopaedic Surgeons (AAOS) uses the terms brace and splint side by side and says that wearing a splint or brace reduces pressure on the median nerve by keeping the wrist straight. For the wider product family, see what a splint is.
Who uses it: people with carpal tunnel syndrome symptoms, clinicians who recommend one, and clinic or pharmacy staff who are asked about them. After carpal tunnel surgery, AAOS notes that a splint or wrist brace may be worn for several weeks.
How it works
The purpose is positional. AAOS states that keeping the wrist in a straight or neutral position reduces pressure on the nerve in the carpal tunnel. A splint does this by limiting how far the wrist can bend, including while the wearer is asleep.
When splints are worn
| Pattern of use | What the source says | Source |
|---|---|---|
| At night | Wearing a brace or splint at night keeps the wrist from bending during sleep. The NHS describes a splint as something you wear at night while you sleep. | AAOS OrthoInfo; NHS |
| During the day | It may also help to wear a splint during the day when doing activities that aggravate symptoms. | AAOS OrthoInfo |
How long a splint is typically worn
The NHS says you may need to wear a splint for up to 6 weeks before it starts to feel better. AAOS lists wearing a wrist splint while sleeping among the simple measures for early symptoms.
Safe use and general guidance
- A splint is one of several measures. The NHS also mentions cutting down on activities that make you frequently bend your wrist or grip hard.
- The NHS advises seeing a GP if symptoms are getting worse or not going away, or if treatment at home is not working. It notes that if a splint does not help, a steroid injection might be recommended.
- AAOS says that if nonsurgical treatment does not relieve symptoms or gives only temporary relief, a doctor may recommend surgery.
- The fit, the pattern of use and the length of time for any individual are decisions for that person’s clinician.
Frequently asked questions
What does a carpal tunnel splint do?
It holds the wrist straight to reduce pressure on the median nerve, according to the NHS and AAOS.
Is a carpal tunnel syndrome splint the same as a wrist brace?
AAOS uses “brace or splint” together for this purpose, and both are described as keeping the wrist straight.
Should a splint be worn at night or during the day?
Both patterns appear in AAOS guidance: at night to prevent wrist bending during sleep, and in the day during activities that aggravate symptoms. A clinician can advise on an individual’s pattern.
How long until a splint helps?
The NHS says up to 6 weeks of wear may be needed before it starts to feel better.
Sources
All sources checked 28 October 2026.
- American Academy of Orthopaedic Surgeons, OrthoInfo, “Carpal Tunnel Syndrome”: https://www.orthoinfo.org/en/diseases–conditions/carpal-tunnel-syndrome/
- NHS, “Carpal tunnel syndrome”: https://www.nhs.uk/conditions/carpal-tunnel-syndrome/
Related reading: elastic bandages and bandages.
