Effect of Night-time and Full-time Splinting for Carpal Tunnel Syndrome

NCT ID: NCT05637294

Last Updated: 2025-08-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

110 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-02-15

Study Completion Date

2026-12-31

Brief Summary

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Carpal tunnel syndrome is a common compression neuropathy of upper extremities. Its usual symptoms are pain, numbness and tingling of fingers, which tend to be worse at night. Splinting the wrist with an external orthosis is usually a first-line treatment provided to most people with mild to moderate disease.

The FINCROSS trial (randomized cross-over trial) aims to assess the effect of night-time and full-time splinting in comparison with no-treatment. It also aims to identify possible subgroups of people who would benefit from splinting, as well as assess if positive response to splinting is associated with subsequent lower need of surgery.

The trial will recruit 110 people with carpal tunnel syndrome in Finland. Each participant will undergo all three treatment periods in a randomised order: 1) splinting at night-time for six weeks, 2) splinting both day and night for six weeks; and 3) be assessed under a six weeks long control period of no-treatment.

Each treatment period will be separated with a three-week washout period. Therefore, the whole treatment sequence for each participant lasts 24 weeks after randomization. The participant will be followed-up to 1 year after the randomisation.

Additionally, the participants will get instructions for self-administered stretching exercises to perform throughout the study. All participants will be asked to avoid any intervention administered or supervised by medical personnel (such as structured supervised exercises, manual therapy, steroid injections, surgery, etc.).

Detailed Description

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Conditions

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Carpal Tunnel Syndrome

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Multicentre, three-treatment, three-period, randomised, crossover superiority trial (3 x 6 crossover design)
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Sequence of three treatment periods in the following order: ABC

Splinting at night while sleeping for 6 weeks (period A), then no treatment for 6 weeks (period B), then splinting at day and night for 6 weeks (period C). Each treatment period will be separated by 3-week washout period.

Group Type OTHER

splinting

Intervention Type DEVICE

neutral-positioned wrist orthosis

Sequence of three treatment periods in the following order: ACB

Splinting at night while sleeping for 6 weeks (period A), then splinting at day and night for 6 weeks (period C), then no treatment for 6 weeks (period B). Each treatment period will be separated by 3-week washout period.

Group Type OTHER

splinting

Intervention Type DEVICE

neutral-positioned wrist orthosis

Sequence of three treatment periods in the following order: BAC

No treatment for 6 weeks (period B), then splinting at night while sleeping for 6 weeks (period A), then splinting at day and night for 6 weeks (period C). Each treatment period will be separated by 3-week washout period.

Group Type OTHER

splinting

Intervention Type DEVICE

neutral-positioned wrist orthosis

Sequence of three treatment periods in the following order: BCA

No treatment for 6 weeks (period B), then splinting at day and night for 6 weeks (period C), then splinting at night while sleeping for 6 weeks (period A). Each treatment period will be separated by 3-week washout period.

Group Type OTHER

splinting

Intervention Type DEVICE

neutral-positioned wrist orthosis

Sequence of three treatment periods in the following order: CAB

Splinting at day and night for 6 weeks (period C), then splinting at night while sleeping for 6 weeks (period A), then no treatment for 6 weeks (period B). Each treatment period will be separated by 3-week washout period.

Group Type OTHER

splinting

Intervention Type DEVICE

neutral-positioned wrist orthosis

Sequence of three interventions/treatments in the following order: CBA

Splinting at day and night for 6 weeks (period C), then no treatment for 6 weeks (period B), then splinting at night while sleeping for 6 weeks (period A). Each treatment period will be separated by 3-week washout period.

Group Type OTHER

splinting

Intervention Type DEVICE

neutral-positioned wrist orthosis

Interventions

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splinting

neutral-positioned wrist orthosis

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. Clinically confirmed carpal tunnel syndrome (CTS) of any severity level (diagnostic criteria: numbness, pain or paraesthesia in the median nerve distribution area of wrist and fingers),
2. Symptom duration of CTS for at least 3 weeks,
3. No previous corticosteroid injection for CTS during last 6 months,
4. No previous surgery for CTS,
5. Aged 18 years or older,
6. Able to complete self-report questionnaires electronically,
7. Able to understand Finnish,
8. Willing to join the study and follow the study protocol instructions,
9. Sign informed consent.

Exclusion Criteria

1. Nerve root or plexus disorders that might be causing CTS mimicking symptoms (e.g., cervical radiculopathy, thoracic outlet syndrome, or whiplash associated disorders),
2. Other neurological condition affecting the function of the hand such as Multiple Sclerosis, previous nerve injury,
3. Active Rheumatoid arthritis or any other active inflammatory joint disease affecting the hand,
4. Thenar muscle atrophy,
5. Untreated hypothyroidism,
6. Known allergy to any of the splint materials (self-reported by patient),
7. Long term treatment (over 4 months) for CTS with no response,
8. Any other known reason that could prevent from participation for the study time.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Terveystalo

OTHER

Sponsor Role collaborator

Hospital Nova of Central Finland

UNKNOWN

Sponsor Role collaborator

Mikkeli Central Hospital

OTHER

Sponsor Role collaborator

Tampere University Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Teemu Karjalainen

Role: PRINCIPAL_INVESTIGATOR

Tampere University Hospital

Jarkko Jokihaara

Role: PRINCIPAL_INVESTIGATOR

Tampere University Hospital

Locations

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Terveystalo Kamppi

Helsinki, , Finland

Site Status RECRUITING

Hospital Nova of Central Finland

Jyväskylä, , Finland

Site Status RECRUITING

Terveystalo Jyväskylä

Jyväskylä, , Finland

Site Status RECRUITING

Mikkeli Central Hospital

Mikkeli, , Finland

Site Status RECRUITING

Tampere University Hospital

Tampere, , Finland

Site Status ACTIVE_NOT_RECRUITING

Terveystalo Tampere

Tampere, , Finland

Site Status RECRUITING

Countries

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Finland

Central Contacts

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Vieda Lusa

Role: CONTACT

+358408713465

Facility Contacts

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Teemu Paatela

Role: primary

Teemu Karjalainen

Role: primary

Teemu Karjalainen

Role: primary

Anniina Laurema

Role: primary

Teemu Karjalainen

Role: primary

Other Identifiers

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R22093

Identifier Type: -

Identifier Source: org_study_id

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