De Quervain's Tenosynovitis

Patient Summary

Is this FDA-cleared for this use?

Not FDA-cleared for de Quervain tenosynovitis. FDA cleared medicinal leeches only for venous congestion in microsurgical reconstruction (K040187, 2004). Use here is investigational.

What evidence exists?

Tier C (investigational). There are no published controlled trials. Evidence-based care: thumb spica splinting (the strongest non-operative evidence), NSAIDs, activity modification (avoiding repetitive thumb abduction and ulnar deviation), local corticosteroid injection (the highest-evidence single intervention - cure rate around 80 percent), and (refractory) surgical release of the first dorsal compartment. New onset in postpartum women (mommy thumb) usually responds well to splinting and corticosteroid injection.

Main risks

• Bleeding from each bite site for 6 to 24 hours after detachment
• Bruising over the radial wrist for 5 to 10 days
• Local skin or, rarely, Aeromonas hydrophila infection
• Allergic reaction to leech saliva (uncommon)
• RISK if leech is placed over the radial artery or radial sensory nerve
• Worsening tendon pain from local irritation
• Delay of thumb spica splinting and corticosteroid injection - which have the strongest evidence

Who should not consider this

• Patients who have not tried thumb spica splinting for at least 4 to 6 weeks
• Patients who have not tried corticosteroid injection (the highest-evidence single intervention)
• Patients with intersection syndrome, CMC arthritis, or radial sensory neuritis mimicking de Quervain
• Patients on anticoagulants, with hemophilia, or with severe anemia
• Patients with active dermatitis or broken skin over the radial wrist
• Patients with peripheral vascular disease affecting the wrist

What to ask your clinician

• Have we confirmed de Quervain tenosynovitis with Finkelstein or Eichhoff testing?
• Have we ruled out intersection syndrome, CMC arthritis, and radial sensory neuritis?
• Have I tried a thumb spica splint for at least 4 to 6 weeks?
• Have I tried corticosteroid injection - the highest-evidence single intervention?
• Am I a candidate for surgical release of the first dorsal compartment if conservative care fails?
• Where exactly will the leech be placed - confirm placement avoids the radial artery and radial sensory nerve?
• What is the Aeromonas-prevention protocol?

When to seek urgent care

• Sudden severe pain with inability to grip or move the thumb (possible tendon rupture)
• Numbness, tingling, or hypersensitivity on the dorsal radial hand (possible radial sensory neuritis)
• Acute swelling, severe pain, or cold pallor of the hand or wrist
• Bleeding from a bite site lasting more than 24 hours
• Fever, chills, or spreading redness at the bite site
• Hives, facial or throat swelling, or breathing difficulty