Comparing non-surgical and surgical treatments for complete thumb ligament tears

MUlticenter Randomized Controlled Trial on Nonoperative Versus Operative Treatment for Acute Complete tearS of the Ulnar Collateral ligAment of the Thumb: Cost- Effectiveness and Functional Outcomes.

Not applicable Interventional Diakonessenhuis, Utrecht · NCT05291260

This study is testing whether treating complete thumb ligament tears with a cast works just as well as surgery for recovery and if it's a more affordable option.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment126 (estimated)
Ages18 Years and up
SexAll
SponsorDiakonessenhuis, Utrecht Academic / other
Locations1 site (Utrecht)
Trial IDNCT05291260 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effectiveness of cast immobilization versus surgical treatment for acute complete tears of the ulnar collateral ligament (UCL) of the thumb, including cases with Stener lesions. The study aims to determine if nonoperative treatment can achieve similar functional outcomes as surgery while being more cost-effective. Participants will be randomly assigned to either treatment group, and their recovery will be monitored to assess the effectiveness of each approach. The trial seeks to fill a gap in high-quality evidence regarding the management of complete UCL ruptures.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 and older who have an acute complete UCL rupture diagnosed by a hand surgeon.

Not a fit: Patients with chronic UCL injuries or those who do not meet the diagnostic criteria for a complete rupture may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a less invasive and more cost-effective treatment option for patients with complete UCL ruptures.

How similar studies have performed: While there is limited high-quality evidence on this topic, previous studies suggest that nonoperative treatment may be effective, indicating potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients 18 years and older
* Dutch or English speaking patients
* Patients with an acute complete UCL rupture, with or without a Stener Lesion, diagnosed using physical examination, performed by the hand surgeon. When providing radically directed force to the proximal phalanx (radial deviation stress) as the thumb metacarpal is stabilized, criteria 1 AND 2 must be present to confirm the diagnosis of a complete UCL rupture:

  * no firm endpoint in the MCP joint AND
  * at least more than 35 degrees of laxity in the MCP joint (measured with the MCP joint in extension or in 30 degrees of flexion) OR more than 15 degrees difference in laxity compared with the uninjured side.

Exclusion Criteria:

-

Where this trial is running

Utrecht

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Ulnar Collateral Ligament SprainSkier's Thumb
Last reviewed 2026-06-13 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.