Most cases of carpal tunnel syndrome are initially managed conservatively. Non-surgical treatments aim to reduce median nerve compression and relieve symptoms. Wrist splints — particularly night splints — keep the wrist in a neutral position to ease nerve pressure; evidence suggests they improve short-term symptoms compared to no treatment. Exercises and physiotherapy, including median nerve gliding and tendon glides, are commonly recommended by hand therapists. A widely cited review noted that steroid injections may offer longer relief than oral steroids, but no conservative treatment cures CTS completely. Other options — NSAIDs, vitamin B6, diuretics — have no proven benefit. Newer treatments like platelet-rich plasma (PRP) or shockwave therapy show potential but lack strong long-term evidence. In practice, most patients try a combination: splints, exercise, and possibly a single corticosteroid injection. About 80% initially improve with conservative care, but many eventually require surgery if symptoms persist or worsen. This article reviews the range of non-surgical strategies and what the current evidence says about each.
Wrist Splinting and Bracing
Night Splints vs Day Braces
Night splints are the most evidence-backed conservative intervention. Worn during sleep, they hold the wrist in a neutral or slightly extended position (0–2°), preventing the natural flexion that increases carpal tunnel pressure overnight. Day braces offer additional protection during work activities but may reduce dexterity for typing or mouse use. Most guidelines recommend starting with night-only splinting and progressing to daytime use if symptoms persist.
Splint Design and Usage Tips
A good CTS splint keeps the wrist neutral without immobilising the fingers. Look for an aluminium stay, adjustable velcro straps, and lightweight padding. Wearing the splint consistently for 4–6 weeks is needed before assessing benefit. Avoid the temptation to keep the wrist extended — this actually worsens pressure in the tunnel.
Limitations
Splinting provides symptom relief but does not treat the underlying cause. Studies show short-term benefit, but many patients relapse after stopping. Compliance is a common issue — splints can be uncomfortable during sleep.
Physical Therapies and Exercises
Nerve Gliding Exercises
Median nerve gliding — also called nerve flossing — involves a sequence of wrist, elbow, and shoulder positions that move the median nerve through its full range of motion without tension. Therapists typically prescribe 10 repetitions of each position, 2–3 times daily. A 2025 survey of hand therapists found nerve glides are among the most frequently recommended non-invasive interventions for CTS.
Tendon Gliding Exercises
Tendon glides move the flexor tendons through the carpal tunnel, reducing adhesions and improving fluid circulation. They involve progressing through five hand positions: straight, hook fist, full fist, tabletop, and straight fist. These are safe, quick (3–5 minutes), and complementary to nerve glides.
Ergonomic Training and Posture Correction
A physiotherapist or occupational therapist can assess your workstation and identify postures that stress the wrist. Shoulder, neck, and thoracic posture also influence median nerve tension — proximal tightness can aggravate distal symptoms. Correcting rounded shoulders and forward head posture is often part of a comprehensive CTS physiotherapy programme.
Medications and Supplements
Corticosteroid Injections
A corticosteroid injection into the carpal tunnel reduces inflammation around the median nerve, providing relief that typically lasts weeks to months. Injections are more effective than oral steroids for short-term relief. Ultrasound guidance improves accuracy and reduces the small risk of nerve or tendon injury. Most clinicians limit injections to one or two per tunnel per year.
NSAIDs, Vitamin B6, and Diuretics
Despite widespread use, clinical evidence does not support NSAIDs, vitamin B6 (pyridoxine), or diuretics for CTS. Multiple reviews have found no significant benefit over placebo. These should not be relied upon as primary treatments.
Other Therapies
Therapeutic ultrasound, laser therapy, and acupuncture have been studied for CTS. Evidence is weak and inconsistent; none are recommended as first-line treatments by major guidelines.
Emerging Therapies
Platelet-Rich Plasma (PRP)
PRP injections — concentrated growth factors from the patient's own blood — have shown some benefit in small trials, with improvements in nerve conduction and symptom scores. However, evidence quality is low and AAOS guidelines do not yet recommend PRP for CTS.
Shockwave Therapy and Kinesio-Taping
Extracorporeal shockwave therapy (ESWT) applied over the carpal tunnel has produced encouraging results in pilot studies. Kinesio-taping of the wrist is widely used by physiotherapists despite limited controlled trial evidence. Both remain experimental options.
The Conservative Treatment Stack
Non-surgical treatment works best when interventions are layered rather than tried one at a time. Each one addresses a different mechanism, and they compound.
Immediate (days 1–7):
- Night splint — Start tonight. Rigid splint, wrist at neutral, every night. This is the highest-evidence single intervention.
- Activity audit — Track your keyboard and mouse interactions for one day. Separate navigational interactions (app switching, scrolling, shortcuts) from content creation. Navigational interactions account for 40–60% of total input for most knowledge workers and can be replaced by voice control, eliminating them without affecting productivity.
Short-term (weeks 1–4): 3. Nerve and tendon gliding exercises — 3 times daily, 5 minutes each session. See the complete exercise guide. 4. Ergonomic workspace assessment — Keyboard flat or negative tilt, mouse immediately adjacent, monitor at eye level. 5. Corticosteroid injection (if symptoms are significant) — Provides a 3–6 month window of reduced inflammation. Most effective as a bridge while implementing structural changes.
Medium-term (weeks 4–12): 6. Reduce repetitive input volume — Replace navigational keyboard and mouse interactions with voice control. This addresses the root cause: the volume of repetitive motion. Every other intervention is fighting against continued damage; reducing input volume is the only lever that changes the damage rate. 7. Physical therapy — A hand therapist can identify compensatory patterns, customize the exercise program, and monitor nerve recovery.
Why 80% initially improve, but many relapse: Conservative treatment works when the damage rate drops below the recovery rate. Most patients achieve this through splinting and exercises, but if they return to the same input patterns after treatment, the damage rate climbs again and symptoms return. Sustainable recovery requires a lasting change to the daily input volume.
When to Consider Escalation
If conservative treatment fails after 2–3 months, or if CTS is moderate-to-severe at presentation (significant numbness, weakness, or abnormal nerve conduction), surgical referral should be considered. Predictors of poor response to conservative treatment include: long duration of symptoms, advanced age, dominant hand involvement, and severe nerve conduction abnormality.
Product Recommendations
| Product | Type | Price Range | Key Specs | Pros / Cons |
|---|---|---|---|---|
| Futuro Night Wrist Brace | Night Splint | £15–£30 | Neutral wrist position; adjustable velcro | Pros: Low cost, widely available. Cons: May slip during sleep; limited effect in severe CTS |
| Mueller Oplift Wrist Brace | Work/Day Brace | £20–£40 | Supports wrist + thumb base; velcro straps | Pros: Can be worn during desk work. Cons: Reduces typing dexterity slightly |
| Portable Therapeutic Ultrasound | Home Therapy Device | £80–£150 | FDA-cleared home unit | Pros: Used by some clinicians for mild CTS. Cons: Evidence not strong; significant upfront cost |
| Ergonomic Desk Setup | Workstation | Varies | Adjustable desk, chair, keyboard tray | Pros: Addresses root ergonomic cause. Cons: Indirect effect; requires full setup investment |
Key Takeaways
- Splinting: Night wrist splints improve short-term CTS symptoms. Their long-term benefit is limited; consistent use for 4–6 weeks is needed before assessing effectiveness.
- Exercises: Nerve and tendon gliding exercises are the most recommended non-invasive interventions among hand therapists. They promote nerve mobility and reduce adhesions.
- Steroid Injection: A corticosteroid injection provides temporary relief for most patients; long-term improvement is uncertain and symptoms may recur within months.
- Other Therapies: Evidence for NSAIDs, vitamin B6, diuretics, and physical modalities is weak or negative. PRP and shockwave therapy are emerging but not yet recommended by major guidelines.
- Conservative vs Surgery: Surgery offers faster symptom relief than splinting. Try conservative methods first unless CTS is severe or causing significant functional loss.
Sources
- AAOS Clinical Guideline on Carpal Tunnel Syndrome (non-surgical vs surgical)
- Cochrane review: Surgery vs Non-Surgical treatments in CTS
- AAFP (2003): CTS management — splint, injection, etc.
- NHS UK: CTS management advice
- Benson et al., Journal of Hand Therapy, 2025: CTS non-invasive management trends
- OrthoInfo (AAOS) — CTS overview
- NICE Clinical Knowledge Summary (CKS) — CTS management
See also: Exercises & Stretches Guide · Ergonomic Input Methods · Surgical Options & Recovery