Clinical trial Recruiting at 2 sites Interventional Ages 18 to 75

Carpal tunnel release vs placebo surgery in Finland

Official title: Finnish Carpal Tunnel Study - a Randomised, Placebo-surgery Controlled Trial

Run by Helsinki University Central Hospital · NCT07614425 · Data updated 2026-11-12

In this trial, people with carpal tunnel syndrome are randomly assigned to either standard carpal tunnel surgery or a pretend surgery to see if relief comes from the operation itself or from placebo effects.

Quick facts

Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment180 (estimated)
SponsorHelsinki University Central Hospital
Academic / other
Locations2 sites (Helsinki and 1 other locations)
StatusRecruiting
StartedJune 11, 2026
Main results expectedMay 30, 2029
Study endsDecember 31, 2035
Registry record updatedOctober 2, 2026
Trial IDNCT07614425 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18-75 with clinically and electrodiagnostically confirmed carpal tunnel syndrome who have not responded to conservative treatments and are willing to undergo surgery.

Probably not a fit

Patients with comorbid conditions or nerve entrapments other than CTS, or those unlikely to benefit from surgery, may not experience improvement.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized, placebo-controlled trial compares standard carpal tunnel release with a sham procedure where the ligament is not cut. Both patients and care teams are unaware of which procedure was performed. The study also offers an observational group for eligible patients who prefer not to be randomized. Outcomes focus on symptom relief and function to determine the true benefit of the surgical intervention. Participants come from multiple centers in Finland and meet specific clinical and electrodiagnostic criteria.

Why it matters

Potential benefit: If the surgery shows benefit beyond placebo, patients may receive clearer guidance on the value of surgery for CTS.

How similar studies have gone: Previous research in surgical placebos for CTS is limited, making this approach relatively novel for CTS.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18-75 years
* Clinical manifestations of carpal tunnel syndrome: paresthesia and /or hypoesthesia in the distribution of the median nerve, possibly pain
* Electrodiagnostically (ENMG or ENEG) verified compression of the median nerve at the carpal tunnel in the wrist, performed no more than a year before recruitment.
* Duration of symptoms 3 months or longer
* Patient living independently
* Patient has not responded to the use of a resting splint supporting the wrist, nor to other possible conservative forms of treatment
* Patient able and willing to give consent
* The patient is willing to undergo surgical treatment for carpal tunnel syndrome.
* The patient has access to a device that can be used to complete electronic symptom questionnaires.

Exclusion Criteria:

* Work disability
* Clinical findings of Abductor Pollicis Brevis atrophy
* Symptoms and Electrodiagnostic findings of some other peripheral neural entrapment than carpal tunnel syndrome
* Rheumatoid arthritis or other forms of systemic inflammatory disease
* Diagnosed dementia
* Neurologic disorders affecting the function of the hand
* Other untreated systemic disorders or diseases with poor therapeutic balance: hypertension, epilepsy, pulmonary or cardiac disease, liver or renal insufficiency, diabetes mellitus, hypothyroidism, psychiatric disease
* Other causes of pain and paresthesia in the hand
* Previous trauma of the hand or wrist (e.g. distal radius fracture), which has resulted in compromised hand function
* Previous carpal tunnel release in either hand
* Previous nerve injury to the upper limb or cervical spine

Where it's running

  • HUS group, Helsinki Central University Hospital, Meilahti Bridge Hospital
    Helsinki, Finland
    Recruiting
  • Wellbeing Services County of Pirkamaa, Tampere Central University Hospital
    Tampere, Finland
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Matrix Rhythm Therapy for Carpal Tunnel Syndrome

    This study tests whether adding Matrix Rhythm Therapy to standard care helps people with mild-to-moderate carpal tunnel syndrome improve symptoms, hand function, grip and pinch strength, and quality of life.

    Recruiting Izmir Bakircay University · Izmir · NCT07660913

  • High-intensity laser therapy for carpal tunnel syndrome

    This trial will test whether high-intensity laser therapy helps adults 18–65 with mild-to-moderate carpal tunnel syndrome reduce pain and improve nerve function and hand strength compared with a sham procedure.

    Recruiting Ankara City Hospital Bilkent · Ankara, Ankara, Çankaya · NCT07414069

  • Ultrasound-guided needle release plus dextrose (D5W) hydrodissection for carpal tunnel syndrome

    This trial tests whether combining ultrasound-guided partial release of the transverse carpal ligament with dextrose (D5W) hydrodissection provides better symptom relief for adults with carpal tunnel syndrome and at least moderate symptoms.

    Recruiting Shin Kong Wu Ho-Su Memorial Hospital · Taipei · NCT07324005

  • A mix of vitamins to help recovery after carpal tunnel surgery

    This will test whether taking alpha-lipoic acid, vitamin E, and B vitamins helps adults recover better after carpal tunnel release surgery.

    Recruiting Hospital Universiti Sains Malaysia · Kubang Kerian, Kelantan · NCT07312123

  • Symptom spread and pain sensitivity in carpal tunnel syndrome

    This test looks at whether people with carpal tunnel syndrome whose symptoms spread beyond the usual finger area have higher central pain sensitivity, using a questionnaire and pressure pain testing.

    Recruiting Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey · Istanbul, Usküdar · NCT07114913

  • Using ultrasound to improve diagnosis and management of carpal tunnel syndrome

    This study is testing if using ultrasound can help doctors diagnose and manage carpal tunnel syndrome better than the usual nerve tests.

    Recruiting Kafrelsheikh University · Kafr ash Shaykh, Kafrelsheikh · NCT06834061

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.