Clinical trial Recruiting at 4 sites Interventional Ages 45 and up

Comparing trapeziectomy to sham surgery for thumb osteoarthritis

Official title: A Multi-center, Investigator-blinded, Randomized, Parallel Group, Superiority Study to Compare the Efficacy of Trapeziectomy Versus Sham Surgery in the Treatment of Osteoarthritis at the Base of the Thumb

Run by Tampere University Hospital · NCT05127005 · Data updated 2026-11-12

This study is testing whether a thumb surgery called trapeziectomy can help people with painful thumb arthritis feel better compared to a fake surgery.

Quick facts

Study typeInterventional
Ages45 Years and up
SexAll
Enrollment132 (estimated)
SponsorTampere University Hospital
Academic / other
Locations4 sites (Helsinki and 3 other locations)
StatusRecruiting
StartedJanuary 20, 2022
Main results expectedSeptember 30, 2028
Study endsMarch 31, 2033
Registry record updatedNovember 2, 2026
Trial IDNCT05127005 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals over 45 years old with confirmed Eaton Glickel grade 2 or higher thumb osteoarthritis who have not found relief from non-surgical treatments.

Probably not a fit

Patients whose primary complaint is due to conditions other than thumb basal joint osteoarthritis or those requiring concurrent surgeries may not benefit from this study.

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

What this trial studies

This clinical trial evaluates the effectiveness of trapeziectomy, a surgical procedure, compared to a sham surgery in patients suffering from painful osteoarthritis at the base of the thumb. It is a multi-center, randomized, placebo-controlled trial that focuses on patient-reported outcomes, specifically pain and function of the wrist and hand, measured at 6 months post-treatment. Secondary outcomes include assessments at 3 months, 1 year, 2 years, and 5 years, as well as grip strength and overall change in condition. The study aims to provide robust data on the benefits of surgical intervention for this condition.

Why it matters

Potential benefit: If successful, this study could provide a validated surgical option for patients suffering from debilitating thumb osteoarthritis, improving their quality of life.

How similar studies have gone: Previous studies have shown varying success with surgical interventions for osteoarthritis, but this specific comparison of trapeziectomy to sham surgery is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Primary thumb basal joint (CMC1) osteoarthritis (Eaton Glickel grade 2 or higher) confirmed by standard x-rays and with symptoms limiting activities of daily living
2. Indication for surgical treatment of thumb basal joint (CMC1) osteoarthritis after insufficient benefit from non-operative treatment, including use of a thumb orthosis and pain medication (NSAIDs or paracetamol, implemented for at least three months.
3. Thumb pain in use of at least 4 on a 0 to10 numerical rating scale (NRS, 10=worst pain)
4. Age \> 45 years
5. ASA-classification I-II (American Society for Anesthesiologist's Physical Status Classification System)
6. Ability to speak, understand and read in the language of the clinical site
7. Provision of informed consent from the participant
8. Shared decision to proceed with surgical treatment of CMC-1 OA

Exclusion Criteria:

1. Patients' main complaint is due to some other problem than primary thumb basal joint (CMC1) osteoarthritis or patient will undergo any other surgery in conjunction with trapeziectomy
2. Neurologic condition affecting the function or symptoms of the upper extremity
3. \<6 months from other surgical procedure of the upper extremities
4. Rheumatoid arthritis or other inflammatory joint disease
5. Bilateral thumb basal joint (CMC1) osteoarthritis in which patient requests treatment for both sides
6. Previous operation due tothumb basal joint (CMC1) osteoarthritis for either side
7. \>45 degrees of hyperextension in the thumb MP joint in resting position (zig zag deformity)
8. Patient is unable to continue his/her current job due to thumb pain

Where it's running

  • Helsinki University Central Hospital
    Helsinki, Finland
    Recruiting
  • Central Finland Hospital Nova
    Jyväskylä, Finland
    Recruiting
  • Kuopio University Central Hospital
    Kuopio, Finland
    Recruiting
  • Tampere University Hospital
    Tampere, Finland
    Recruiting

Study contacts

Similar studies

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

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.