Tendons are fibrous cords that attach muscle to bone. Each tendon is surrounded by a protective sheath. Trigger finger occurs when the affected finger's tendon sheath becomes irritated and inflamed. This interferes with the normal gliding motion of the tendon through the sheath.
Prolonged irritation of the tendon sheath can produce scarring, thickening and the formation of bumps (nodules) that impede the tendon's motion even more.
Aug. 27, 2014
- Frontera WR, et al. Essentials of Physical Medicine and Rehabilitation: Musculoskeletal Disorders, Pain, and Rehabilitation. 2nd ed. Philadelphia, Pa.: Saunders Elsevier; 2008. http://www.clinicalkey.com. Accessed July 25, 2014.
- Ferri FF. Ferri's Clinical Advisor 2015: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2015. https://www.clinicalkey.com. Accessed July 25, 2014.
- AskMayoExpert. Trigger digits (finger, thumb). Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2014.
- Anderson BC. Trigger finger (stenosing flexor tenosynovitis). http://www.uptodate.com/home. Accessed July 25, 2014.
- Amadio PC (expert opinion). Mayo Clinic, Rochester, Minn. July 31, 2014.
- Canale ST, et al. Campbell's Operative Orthopaedics. 12th ed. Philadelphia, Pa.: Mosby Elsevier; 2013. http://www.clinicalkey.com. Accessed July 29, 2014.
- Sato ES, et al. Treatment of trigger finger: Randomized clinical trial comparing the methods of corticosteroid injection, percutaneous release and open surgery. Rheumatology. 2012;51:93.
- Golden AK. Decision Support System. Mayo Clinic, Rochester, Minn. June 21, 2013.
You Are ... The Campaign for Mayo Clinic
Mayo Clinic is a not-for-profit organization. Make a difference today.