Effect of Platelet Rich Plasma on Thumb Osteoarthritis

A Study on the Effect of High-concentrated Platelet Rich Plasma (PRP) on Osteoarthritis in the Thumb Base.

NA · Karolinska Institutet · NCT06193499

This study is testing whether injections of platelet-rich plasma can help people with thumb osteoarthritis feel less pain and improve their hand function compared to a placebo.

Quick facts

PhaseNA
Study typeInterventional
Enrollment90 (estimated)
SexAll
SponsorKarolinska Institutet (other)
Locations1 site (Stockholm)
Trial IDNCT06193499 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of high-concentration platelet rich plasma (PRP) injections compared to a placebo in reducing pain and disability in patients with thumb base osteoarthritis. It involves 90 participants who will receive either the PRP treatment or a placebo, with outcomes measured at 3 and 6 months post-injection. The primary focus is on pain during load, assessed using a numerical rating scale, along with other patient-rated outcomes such as grip strength and range of motion. Both participants and assessors will be blinded to ensure unbiased results.

Who should consider this trial

Good fit: Ideal candidates are individuals diagnosed with thumb base osteoarthritis classified as Eaton Littler class 1-3.

Not a fit: Patients with rheumatoid arthritis, ongoing infections, or severe joint degeneration (Eaton Littler class 4) may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly reduce pain and improve function for patients suffering from thumb base osteoarthritis.

How similar studies have performed: Previous studies have shown promising results with PRP injections for various joint conditions, suggesting potential success for this approach in treating thumb osteoarthritis.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Osteoarthritis in the thumb base
* Radiological Eaton Littler class 1-3.
* Clinical signs of thumb base osteoarthritis )pain at palpation of the CMC-1 joint and pain during provocation/grinding test).

Exclusion Criteria:

* Rheumatoid arthritis
* Ongoing infection in the hand or wrist
* History of gout or pseudogout in the hand
* Inability to co-operate with the follow-up protocol (language difficulties, severe psychiatric disorder, cognitive impairment, drug addiction).
* Chronic pain syndrome / centralized pain.
* Intra-articular injection in the affected joint within 6 months.
* Eaton Littler class 4 (symptomatic STT joint osteoarthritis).

Where this trial is running

Stockholm

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.

View on ClinicalTrials.gov →

Conditions: Osteoarthritis Thumb, CMC-1 joint, thumb basal joint, PRP, Platelet-rich plasma

Last reviewed 2026-05-15 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.