Carpal Tunnel Syndrome
Carpal tunnel syndrome is pressure on the median nerve as it passes through a narrow tunnel at the front of the wrist. It usually causes numbness and tingling in the thumb, index, middle and part of the ring finger, often waking people at night, and can lead to a weaker grip and dropping things.
Key points
- What usually helps
- A night splint that keeps the wrist straight, and changes to grip and wrist position.
- What you can do now
- Wear a straight-wrist splint every night. Do gentle nerve and tendon glides.
- How long it takes
- Mild cases often ease within several weeks; moderate cases deserve 6 to 12 weeks of non-surgical care.
- When to see a doctor first
- Some signs need emergency care. Check the list before you start treatment.
Symptoms
Does this sound like you?
- Numbness and tingling in the thumb, index and middle fingers, and the thumb-side half of the ring finger (the area the median nerve supplies)
- Symptoms that wake you at night and ease when you shake the hand out
- Dropping things because grip and feeling in the fingers are reduced
- Pain spreading from the wrist up the forearm, occasionally to the shoulder
- In more severe cases, weakness bringing the thumb across to touch the fingertips (thumb opposition) and in pinch grip
Often alongside it
- Clumsiness with fiddly tasks (buttoning, picking up small objects)
- The hand feels swollen, but no swelling can be seen
- Burning or electric shock-like sensations in fingers
- Symptoms worse when the wrist stays bent forward or back (driving, holding a phone, reading)
- Wasting of the muscle at the base of the thumb (thenar atrophy) in severe, long-standing cases
- Neck and shoulder pain (may point to a pinched nerve in the neck, or the nerve being irritated at two points, called double crush)
It comes on gradually over weeks to months. Night symptoms are the main feature early on. Symptoms that come and go gradually become constant. Shaking the hand out relieves them at first but works less well over time. Both hands are often affected, though it may start in one hand or be worse on one side.
Before using this comparison, check when these symptoms need a doctor first.
When to see a doctor first
Go to emergency
Any of those changes starting suddenly, getting worse rapidly, or making walking difficult
Go to emergency now
Sudden unexplained weakness or numbness in an arm or leg, even if it improves
Call 911 now. This can be a stroke. Do not wait for a physiotherapy appointment
Numbness that comes on quickly after a wrist injury or fracture, or worsens over hours to days
Go to emergency now; acute nerve compression after an injury can need urgent surgery
Get seen today
New or worsening hand clumsiness, arm or leg weakness, or trouble walking or balancing
Same-day medical assessment before any exercise; this can mean pressure on the spinal cord in the neck
Check with your doctor
Constant numbness that does not ease with changing position or shaking the hand
See your family doctor promptly for nerve testing and a surgical opinion, to protect the nerve
Visible muscle wasting at the base of the thumb (flatter than the other hand)
See your family doctor promptly for a surgical opinion; splints and exercise are unlikely to restore the muscle
Unable to touch the thumb to the fingertips, or a weak pinch grip
See your family doctor promptly for nerve testing and a surgical opinion
Symptoms in the whole hand including the little finger, without trouble walking or balance changes
This pattern needs an assessment of the neck and other nerves as well as the wrist. I check these, and can advise whether medical tests or a referral are needed
No improvement after 8-12 weeks of appropriate conservative treatment with good compliance
I flag it to your family doctor, who can arrange nerve testing and discuss an injection or a surgical opinion
Treatment
How it is treated
Main approach. A night splint that keeps the wrist straight (neutral) is a low-cost first step for mild to moderate cases. A 2023 Cochrane review of trials found small and uncertain benefits overall, but more people reported feeling better overall in the short term with a night splint than with no treatment.
Alongside it. Gentle exercises that slide the nerve and tendons through the wrist (nerve and tendon gliding) may help as part of a combined plan. A cortisone (corticosteroid) injection from a physician probably relieves symptoms for up to several months.
Managing it over time. Keeping the wrist closer to straight at work and taking regular short breaks may ease symptoms in jobs that use the hands heavily.
A typical rehabilitation progression
Three phases, from settling symptoms to returning to full activity.
Recovery from carpal tunnel syndrome is usually staged: calm the symptoms first, then rebuild the strength and capacity of the area, then return to your full activities. The phases below show how that can progress.
Phase 1Easing the Pressure and Calming the Nerve (Weeks 1 to 4)
The early priority is lowering the pressure inside the , especially at night. Shi and colleagues, Huisstede and colleagues, and the clinical practice guideline from the American Academy of Orthopaedic Surgeons (AAOS) all point to night splinting, changes to daily activities and gentle exercises (nerve mobilisation) as the base of non-surgical care for mild to moderate cases. Nothing in this phase should bring on sharp pain or numbness during the exercise.
Example exercises
- A wrist splint worn every night, checked to hold the wrist truly straight (neutral), not bent back
- sliders (gentle movements that slide the nerve without stretching it): with the elbow bent, open and close the hand while the wrist moves through a small pain-free range, 10 slow repetitions 3 to 4 times daily
- Tendon gliding sequence (straight, hook, fist, tabletop, straight fist), 5 repetitions of each position 3 times daily
- Workstation review: keyboard and mouse at elbow height, wrists kept close to straight, a vertical mouse if comfortable, short breaks every 20 to 30 minutes
- A review of tasks with long spells of gripping (vibrating tools, heavy pinching), shortening the longest spells rather than stopping the task entirely
Possible progression milestones
Waking at night less often than at the start, daytime symptoms no longer constant, and nerve glides comfortable without bringing on sharp symptoms, over at least one to two weeks of consistent splint use.
Phase 2Rebuilding Strength in the Forearm and Wrist (Weeks 4 to 10)
Once the nerve is less irritable, start rebuilding the muscle support around the wrist and hand, and further up the arm. This phase is about increasing the hand's tolerance for daily loads without repeating the positions that squeeze the nerve. Shoulder and upper back work is added when the assessment suggests it helps, for comfort and endurance in long tasks.
Example exercises
- Strengthening for moving the thumb away from the hand and across to the fingertips (thumb and opposition) with a light band, 3 sets of 10 to 15, to keep the muscles at the base of the thumb working
- Strengthening for bending the wrist forward and back (wrist flexors and extensors) with a light dumbbell, moving slowly, 3 sets of 10 to 15, through a comfortable pain-free range
- Grip work with a soft ball or putty at less than full effort, 3 sets of 10, making it firmer as tolerance allows
- Shoulder blade setting, rows and turning the arm outward (external rotation) with a light band, 3 sets of 10 to 12, for shoulder endurance during long desk or hand tasks
- Median nerve tensioners (movements that put a gentle stretch on the nerve), started at a low amount and built up, only if sliders have been fully comfortable for 2 weeks
Possible progression milestones
Night symptoms largely controlled with the splint, no constant daytime numbness, grip strength improving from one test to the next, and the symptom severity score on a carpal tunnel questionnaire (the Boston Carpal Tunnel Questionnaire) down by at least 1 point.
Phase 3Return to Work and Keeping the Gains (Weeks 10+)
Hold on to the gains and test whether the hand copes with a realistic workload without symptoms coming back. The goal is to wean off the night splint and keep the workstation and exercise changes. For many people with a history of carpal tunnel syndrome, ongoing upkeep does better than dealing with flare-ups as they come. If symptoms return during this phase even though you have kept to the plan, a surgical opinion moves up the priority list.
Example exercises
- Practice that mirrors real work demands (long typing blocks, spells of tool use, grip work for your sport) with scheduled short breaks
- Strengthening for bending the wrist forward and back through the full range, with moderate resistance, 3 sets of 8 to 12, 2 to 3 times per week
- Carrying weights, such as farmer walks with moderate dumbbells, to build how long you can hold a grip
- Checking sleep position and nightly splint use from time to time, and considering a gradual wean off the splint if symptoms stay away
- Keeping the shoulder blades, neck and upper back moving well, particularly for desk workers
Possible progression milestones
Night symptoms controlled without the splint, daytime symptoms minimal or absent during full work duties, the questionnaire symptom score in the normal range, and two weeks in a row of unrestricted activity without constant numbness coming back.
What you can do now
- Wear a straight-wrist splint every night. Most people sleep with the wrists curled forward, which raises the pressure in the tunnel, and a splint that holds the wrist straight (neutral) prevents that. Many people find it eases night waking, although the overall evidence for splinting is modest.Check that it holds the wrist straight, not bent back, which also raises the pressure. Wear it every night and keep going for at least 4 to 6 weeks, even if symptoms improve quickly; occasional use is less likely to help.
- Do gentle nerve and tendon glides. These movements slide the median nerve and the finger tendons through the tunnel to keep them moving freely: for example, opening and closing the hand with the elbow bent while the wrist moves through a small, comfortable range, and the tendon gliding positions (straight, hook, fist, tabletop, straight fist). Do them 3 to 5 times a day.They should feel comfortable; if they cause sharp pain or numbness, make the movement smaller or do them less often. If symptoms are badly stirred up, skip them and restart when you can tolerate them.
- Keep the wrist straight at your desk. Put the keyboard at elbow height with the mouse at the same level, rest the wrists only during pauses rather than while typing, and consider a vertical mouse so the palm is not turned down all day. Take a 30-second break every 20 to 30 minutes to change position and do a few nerve glides.
- Shorten long grips and bent-wrist tasks. For a while, cut back on or change tasks that keep the wrist bent forward or back for long periods or involve forceful, repeated gripping, such as vibrating tools or heavy pinching, while you keep using the hand in other ways. Jar openers and easy-grip tools help during flare-ups.Check your symptoms 2 to 4 hours after an activity and the next morning; a temporary rise that settles within 4 hours is acceptable.
- Give it a fair trial, within limits. For mild to moderate cases, a fair trial is 6 to 12 weeks of nightly splinting, task changes and nerve glides. Carpal tunnel syndrome that starts in pregnancy often clears within weeks of the birth.Numbness that stays constant, a flatter muscle at the base of the thumb, or trouble touching the thumb to the fingertips needs a prompt visit to your family doctor rather than a longer trial (see the warning signs on this page).
What I use in clinic
- Night splinting. Low-certainty evidence of small benefits: a 2023 Cochrane review of 29 trials found night-time splinting improved overall symptoms more often than no treatment in the short term, while average symptom scores changed only slightly.
- Nerve and tendon gliding. Mixed evidence; may help as part of a combined plan with splinting and activity changes.
- Workstation and activity changes. May ease symptoms, though the evidence is limited; the practical steps are under What you can do now.
- Corticosteroid Injection. Given by a physician, not by me. A 2023 Cochrane review found it probably improves symptoms more than placebo for up to three to six months, with a small reduction in the need for surgery at one year.
- Hands-on treatment (manual therapy). Limited evidence for gently moving the small wrist bones (carpal bone mobilization), nerve gliding and soft tissue work; may give short-term relief.
- Education. Understanding which positions bring on symptoms and wearing the splint consistently can help people get the most from non-surgical care.
Recovery
How long it takes
Mild cases often ease within several weeks of night splinting and activity changes. Moderate cases deserve a fair trial of 6 to 12 weeks of non-surgical care, and those not improving are referred for an injection or a surgical opinion. Severe cases, with constant numbness or wasting of the muscle at the base of the thumb, are referred for a surgical opinion, and some people keep mild symptoms if the nerve was badly affected.
Some cases improve on their own, especially during pregnancy and after delivery, while others stay the same or slowly worsen. Constant numbness or thumb weakness means the nerve is under more strain, and leaving that untreated risks permanent numbness or weakness.
What changes the timeline
- How badly the nerve is compressed on nerve testing (electrodiagnostic testing), the strongest single predictor of whether non-surgical care helps
- How long you have had symptoms (a shorter history means a better outlook; symptoms lasting over 12 months respond less to non-surgical care)
- Whether numbness is constant or comes and goes (constant numbness signals more pressure on the nerve, and surgery is considered sooner)
- Wasting or weakness of the muscle at the base of the thumb (signals damage to the nerve's supply to muscle, and a poor outlook for non-surgical care)
- Whether you can change aggravating activities and keep the wrist straight during work and other activities
- Wearing the night splint consistently (patchy use makes it much less likely to help)
- Underlying health conditions (carpal tunnel syndrome in pregnancy usually clears after the birth; with diabetes it is harder to treat)
- One hand or both (both hands suggests a body-wide contributor; one hand points more to a mechanical cause, from how the hand is used)
How I track it. I track night symptoms (how often you wake, and whether you need to shake the hand out), daytime symptoms (whether the numbness is constant or comes and goes), everyday tasks (buttoning, picking up small objects, gripping), and feeling in the fingers the median nerve supplies. Testing whether you can tell one touch point from two close together (two-point discrimination), compared with the other hand, gives a measurable check on feeling. Grip and pinch strength measurements track the muscles
Similar conditions
Conditions that can feel similar
- Cervical Radiculopathy (C6 or C7)
- Pain mainly in the neck that spreads into the arm along the strip of skin one nerve root supplies (a dermatome), rather than the median nerve's area. Turning and tilting the head toward the sore side with gentle downward pressure brings on the arm symptoms (Spurling's test), and any weakness or numbness follows a nerve root rather than sparing the little finger.
- Pronator Syndrome (Median Nerve Compression in the Forearm)
- Aching along the upper forearm on the palm side, with no clear night-time pattern. Numbness often includes the centre of the palm (the palmar cutaneous branch area), which classic carpal tunnel syndrome spares, and turning the palm down against resistance brings on the symptoms.
- Thoracic Outlet Syndrome
- Symptoms across the whole hand rather than only the median nerve's area. They depend on position (worse with the arm raised or when carrying), come with neck and shoulder symptoms, and may include blood-flow signs such as colour or temperature change in the hand.
- Ulnar Nerve Entrapment at the Cubital Tunnel
- Numbness and tingling in the ring and little fingers (the opposite side of the hand to the median nerve), worse when the elbow stays bent. Tapping over the nerve at the inner elbow sets off tingling (Tinel sign), or holding the elbow fully bent brings on symptoms (elbow flexion test). In more severe cases the small hand muscles are weak.
- De Quervain's Tenosynovitis
- Sharp pain in one spot on the thumb side of the wrist, over the tunnel that carries two thumb tendons (the first dorsal compartment). A thumb-and-wrist stretch done by a clinician is painful (Finkelstein test), there is no numbness or night-time pattern, and thumb movement brings on the symptoms rather than gripping or holding the wrist in one position.
- First Carpometacarpal Joint or Wrist Osteoarthritis
- Pain along the joint itself, and morning stiffness. Loading the joint brings on the pain, while tests that stress the nerve do not. The joint changes show on X-ray, and there is no typical night-time numbness.
Questions
What patients ask me most
Why does my hand go numb at night with carpal tunnel syndrome?
Most people sleep with their wrists curled forward (flexed), which dramatically increases pressure inside the carpal tunnel. Sustained over several hours, that pressure starves the median nerve of oxygen, and you wake up with numbness, tingling, or aching that clears when you shake the hand out. This is the single most recognisable pattern of carpal tunnel syndrome, and it is why a neutral-position night splint is such a useful first-line intervention.
Do wrist splints actually help carpal tunnel syndrome?
They can help some people, particularly at night and in mild to moderate cases. The AAOS Clinical Practice Guideline on Management of Carpal Tunnel Syndrome supports splinting as a non-operative option. The 2023 Cochrane review (Karjalainen and colleagues) found the overall benefit small and uncertain, but more people reported short-term improvement with night splinting than with no treatment. A straight (neutral) wrist matters, because a splint that holds the wrist bent back also raises tunnel pressure. Wearing it consistently is the main factor I see separating people who get better from people who do not.
Do I need surgery for carpal tunnel syndrome?
Not everyone. Mild to moderate cases respond to non-surgical care, including night splinting, activity modification, nerve gliding, and ergonomic changes. Shi and colleagues' 2020 systematic review comparing surgical and non-surgical treatment found surgery gave somewhat better function and symptom scores than splinting or injection at 6 months, while both approaches helped. A 2024 Cochrane review (Lusa and colleagues) found more people improved with surgery than with a splint in the long term, but judged the differences in symptom and hand function scores too small to matter to most patients. I typically recommend surgical consultation when there is constant numbness, visible wasting of the muscle at the base of the thumb (thenar wasting), muscle weakness, or when 6 to 12 weeks of appropriate non-surgical care has not changed the picture.
How long should I try splints and therapy before considering surgery?
For mild to moderate cases, a fair trial is 6 to 12 weeks of consistent nightly splinting plus activity modification and nerve glides. If you see clear symptom improvement in that window, I continue and re-evaluate at 12 weeks. If there is no meaningful change, or symptoms are progressing, I involve a surgical consult earlier rather than later. Severe cases with constant numbness or wasting of the thumb-base muscle (thenar atrophy) should proceed to surgical review straight away, because the nerve damage in that situation is not reliably reversible.
Can carpal tunnel syndrome go away on its own?
Sometimes. Pregnancy-related carpal tunnel syndrome very often resolves within weeks of delivery as fluid shifts settle. Mild, activity-related cases can improve with load reduction alone. Most moderate or progressive cases, though, do not spontaneously resolve. They either plateau or worsen, which is why active management matters early rather than waiting to see.
Will nerve gliding exercises help?
Nerve and tendon gliding is a reasonable add-on, and systematic reviews show mixed but generally positive results, particularly for mild to moderate cases when combined with splinting and activity change. They should feel comfortable, not sharp. If gliding exercises make symptoms worse, they are being done too aggressively or the nerve is more irritable than the current amount tolerates.
Is carpal tunnel syndrome caused by typing?
Typing alone is not the whole story. The evidence for pure keyboard use as a direct cause is weaker than people assume. More often it is a combination of sustained wrist posture, repetitive forceful gripping, and underlying factors like pregnancy, diabetes, thyroid issues, higher body mass, or a naturally smaller tunnel. Changing the workstation helps many people, but if symptoms do not shift, I look for health conditions that may be contributing.
Why are my symptoms in both hands?
New or worsening hand clumsiness, arm or leg weakness, or trouble walking or balancing needs a same-day medical assessment before exercise, because it can come from pressure on the spinal cord in the neck. If these changes start suddenly, worsen rapidly, or make walking difficult, go to emergency now. Otherwise, carpal tunnel syndrome in both hands is common, and can point to a body-wide contributor rather than a purely mechanical one. Pregnancy, diabetes, an underactive thyroid (hypothyroidism), and inflammatory arthritis all raise carpal tunnel pressure or make the nerves less resilient on both sides. When both hands are affected, I check medical history more carefully and think about referring back to the family doctor for bloodwork if those have not been reviewed recently.
The science
The Science of Carpal Tunnel Syndrome
syndrome (CTS) is a peripheral nerve compression resulting from increased pressure on the as it passes through the carpal tunnel at the wrist. The carpal tunnel is an anatomically confined space bounded by carpal bones dorsally and the transverse carpal ligament (flexor ) volarly. Nine flexor tendons (four flexor digitorum superficialis, four flexor digitorum profundus, and flexor pollicis longus) pass through this tunnel alongside the median nerve, creating potential for compression when tunnel pressure rises above the pressure needed to keep blood flowing to the nerve.
The pathophysiological cascade begins with mechanical compression causing impaired microvascular blood flow to the nerve (ischemia) and reduced venous drainage (congestion). This leads to nerve edema, further increasing tunnel pressure in a vicious cycle. Initially, compression affects the myelin sheath causing focal demyelination at the compression site, manifesting as intermittent and nocturnal symptoms. With sustained compression, axonal develops, progressing from distal sensory fibers to motor fibers, eventually causing permanent sensory loss and muscle atrophy if untreated.
Multiple factors contribute to increased carpal tunnel pressure. (inflammation of the tendon sheaths) from repetitive motion increases the volume of contents within the fixed-space tunnel. Systemic conditions including pregnancy (fluid retention), hypothyroidism (myxedematous tissue accumulation), rheumatoid (synovial inflammation), diabetes mellitus (metabolic factors affecting nerves), and obesity (increased tissue pressure) predispose to CTS. Anatomical variations such as persistent median artery, aberrant muscles within the tunnel, or smaller tunnel dimensions increase baseline pressure. Wrist position has a large effect on tunnel pressure: in people with carpal tunnel syndrome, Gelberman and colleagues (1981) measured an average of 32 mmHg with the wrist straight, 94 mmHg in full flexion and 110 mmHg in full extension.
The median nerve provides sensory innervation to the palmar aspect of the thumb, index, middle, and radial half of the ring finger, plus motor innervation to the thenar muscles (abductor pollicis brevis, opponens pollicis, superficial head of flexor pollicis brevis) responsible for thumb opposition and . This explains the characteristic sensory distribution and eventual thumb weakness in more severe CTS. The condition often coexists with , , or pronator syndrome (double or triple crush phenomenon), where proximal nerve compression makes distal compression sites more symptomatic.
Risk factors include being female (likely related to smaller tunnel anatomy and hormonal influences), age 40 to 60, pregnancy (third trimester fluid retention), obesity, diabetes mellitus, hypothyroidism, rheumatoid arthritis, wrist trauma or fracture history, and occupations requiring repetitive forceful gripping, sustained wrist flexion/extension, or vibration exposure (assembly line work, meat processing, construction, computer-intensive work).
Contributing factors
The biomechanical drivers of syndrome center on sustained or repetitive wrist postures and hand activities that increase intracarpal tunnel pressure. Wrist position has the largest effect. Tunnel pressure is lowest with the wrist straight and rises several-fold in full flexion or extension in people with carpal tunnel syndrome (Gelberman et al., 1981), and gripping in those positions raises it further, which can reduce blood flow to the nerve.
Computer work represents a significant modern risk factor, though the mechanism is more complex than commonly assumed. During keyboard typing, the wrists typically rest in extension () if the keyboard is positioned too high relative to elbow height. Even mild extension of 15-20 degrees maintained for hours creates sustained elevated tunnel pressure. Mouse work is particularly problematic because it combines wrist extension with ulnar deviation and sustained static muscle contraction to control fine movements. The precision grip required for mouse control activates flexor tendons that further increase tunnel volume. Even so, the evidence linking keyboard use itself to carpal tunnel syndrome is weaker than often assumed.
Forceful gripping activities dramatically increase tunnel pressure through two mechanisms: increased flexor tendon excursion through the tunnel and increased muscle activation compressing the tunnel externally. Activities like using pliers, turning wrenches, carrying heavy bags by handles, or sustained power grip during manual labor can elevate tunnel pressure above 200 mmHg. Assembly line work requiring repeated forceful gripping with the wrist in non-neutral positions shows particularly high CTS rates. Vibration exposure from power tools compounds the problem by causing microtrauma to the nerve and promoting .
Repetitive finger movements, especially combined with wrist deviation, create cumulative trauma. During finger flexion and extension, the flexor tendons glide through the carpal tunnel, and the more forceful and repetitive this movement, the greater the mechanical irritation and potential for tenosynovial thickening. Activities like playing musical instruments (piano, guitar, violin), assembly work, cashiering, or data entry that require thousands of repetitive finger movements daily create substantial cumulative mechanical stress. The combination of finger movement with wrist deviation (common in assembly tasks reaching to different stations) maximally increases tunnel pressure.
Sleeping postures contribute to nocturnal symptoms, the hallmark of CTS. Most people sleep with wrists curled into flexion, either tucked under the pillow or pressed against the chest. This sustained flexion throughout 6-8 hours of sleep maintains elevated tunnel pressure, causing the characteristic awakening with hand numbness that requires shaking the hand to restore circulation. The supine sleeping position with wrists resting in flexion is particularly problematic. This is the reasoning behind night splinting in a neutral wrist position.
Sustained pinch grip activities create unique biomechanical stress. Fine hand tasks requiring sustained thumb-index finger pinch (sewing, knitting, crafts, detailed assembly work, using scissors) maintain continuous flexor tendon loading without relaxation periods. The sustained nature prevents recovery time between loading cycles, promoting inflammation. Smartphone and tablet use requiring sustained thumb reach and wrist flexion while supporting device weight contributes to modern CTS incidence.
Problems higher up the arm can overlap with carpal tunnel symptoms. Irritation of a in the neck, particularly at C6 and C7, which contribute to the , can produce symptoms that mimic or overlap with CTS, and some researchers propose that irritation at one point along a nerve may make another point more sensitive (the "double crush" idea, which is still debated). I assess the neck and shoulder when symptoms suggest another nerve problem, rather than assuming posture is the cause of compression at the wrist.
Grip strength and hand size create biomechanical vulnerability. Individuals with smaller wrist circumferences have smaller carpal tunnels with less space for median nerve. Reduced grip strength forces people to grip harder to achieve the same task, increasing flexor tendon forces and tunnel pressure. Weak wrist stabilizers cause compensatory wrist movement during gripping tasks, forcing the wrist out of neutral position under load.
Research
What the studies show
More people felt better overall in the short term with a night splint than with no treatment, but the benefit was small and uncertain
A Cochrane review (Karjalainen and colleagues, 2023) pooled 29 randomised trials with 1,937 adults. Compared with no active treatment, wrist splinting may give only small, uncertain benefits for symptoms and hand function: the average improvement in symptom scores was smaller than the change usually considered meaningful to patients, and the evidence was low in certainty. The clearest signal was that more people reported feeling better overall in the short term with a night splint than with no treatment. Because a splint costs little and has no likely long-term harm, it can be a reasonable first option, particularly for people not interested in injections or surgery.
A night splint is a reasonable, low-cost first step for mild to moderate cases, with realistic expectations: the benefit is often modest, and persistent or severe symptoms call for a medical opinion.
Karjalainen TV, Lusa V, Page MJ, et al. (2023). Splinting for carpal tunnel syndrome. Cochrane Database Syst Rev. PMID: 36848651.
A cortisone injection probably eases symptoms more than a placebo injection for up to six months, and in the long term surgery probably helps more people improve than a splint
A Cochrane review (Ashworth and colleagues, 2023) pooled 14 randomised trials with 994 people. Compared with a placebo injection, a cortisone (corticosteroid) injection probably improves symptoms at up to three months and at up to six months, and probably slightly reduces the need for surgery at 12 months; the evidence was moderately certain. A separate Cochrane review of surgery versus non-surgical treatment (Lusa, Karjalainen and colleagues, 2024) pooled 14 trials with 1,231 people. Compared with a splint, surgery probably led to more people improving in the long term (3 trials, 210 people) and fewer people going on to further surgery, but probably made no difference large enough to matter to patients in scores for symptoms or hand function. The authors were unsure whether the results apply to people who have already tried non-surgical care without success, and suggest that people with severe symptoms, a strong wish to improve and reluctance to keep up non-surgical care may choose surgery.
An injection from a physician is an option for people who want relief without surgery or need to delay it, such as during pregnancy; the benefit is time-limited, so it is discussed alongside splinting and activity changes rather than in place of them. People with tolerable symptoms can start with non-surgical care and move to surgery only if needed, while constant numbness or thumb weakness are reasons to get a surgical opinion early rather than waiting.
Ashworth NL, Bland JDP, Chapman KM, et al. (2023). Local corticosteroid injection versus placebo for carpal tunnel syndrome. Cochrane Database Syst Rev. PMID: 36722795. Lusa V, Karjalainen TV, Pääkkönen M, et al. (2024). Surgical versus non-surgical treatment for carpal tunnel syndrome. Cochrane Database Syst Rev. PMID: 38189479.
Related Conditions
Conditions I commonly see alongside, or confused with, this one.
Repetitive Strain Injuries
Carpal tunnel syndrome is a type of repetitive strain injury
De Quervain's Tenosynovitis
Both affect the wrist; can coexist due to similar risk factors
Tennis Elbow
Both can result from poor ergonomics and repetitive wrist/forearm motions
Diabetes-Related Musculoskeletal Conditions
Diabetes is a recognised risk factor for carpal tunnel syndrome
Neck Pain & Stiffness
Cervical radiculopathy can mimic carpal tunnel symptoms
Getting back to it
Physiotherapy for carpal tunnel syndrome, built around the activity you want back.
