Trigger Finger

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Contents 1 Introduction 2 Etiology 3 Pathology 4 Clinical-manifestations 5 Management 6 More General Terms 7 Additional Terms 8 References

Introduction

• Inability to re- extend the finger (generally 2nd or 3rd finger) after flexion, due to sticking of tendon in the metacarpal tendon sheath.

Etiology

• direct mechanical trauma to the joints of the fingers
• repetitive grasping action involving the fingers &/or thumb

Pathology

• inflammation due to overuse of the superficial finger flexion tendons
• tendon nodules at the A1 pulley site ( distal palmar area over the distal metacarpal head
• sticking of tendon in the metacarpal tendon sheath

Clinical-manifestations

• inability to re- extend the finger (generally 2nd or 3rd finger) after flexion
• making a fist may be difficult/painful
• the digit may finally extend with a painful click
• a nodule may be felt over the A1 pulley

Management

• steroid injection: 0.5 cc Kenalog (40 mg/mL) [3]
• surgical release

More General Terms

• musculoskeletal disease/disorder

Additional Terms

• joint/bursa injection

References

1. Contribution from Dr. M. Fung, Kaiser Permanente, Fresno CA
2. Clyman B, in: UCLA Intensive Course in Geriatric Medicine & Board Review, Marina Del Ray, CA, Sept 12-15, 2001
3. Rozental TD et al. Trigger finger: Prognostic indicators of recurrence following corticosteroid injection. J Bone Joint Surg Am 2008 Aug; 90:1665. PMID: [1]

trigger finger/thumb