Tendons connect bones to muscles in the body. Flexor tendons of the thumb and fingers pull the fingers into a fist. The tendons are enclosed in a synovial sheath. When this sheath becomes inflamed it can cause trigger finger.
Usually, tendons slide easily through the sheath as the finger moves. In the case of trigger finger, the synovial sheath is swollen. The tendon cannot move easily. This causes the finger to remain in a flexed (bent) position. In mild cases, the finger may be straightened with a pop. In severe cases, the finger becomes stuck in the bent position. Usually, this condition can easily be treated.
Many cases of trigger finger are caused by:
Trigger finger is more common in women, and in people aged 40-60 years old. Other factors that may increase your chance of trigger finger include:
Trigger finger may cause:
Your doctor will ask about your symptoms and medical history. A physical exam will be done. The physical exam may include:
Your doctor can diagnose trigger finger based on the exam. For severe cases, your doctor may refer you to a hand specialist.
Talk with your doctor about the best plan for you. The goal of treatment is to reduce swelling and pain. This will allow the tendon to move freely in the sheath. Treatment options include the following:
Stopping movement in the finger or thumb is often the best treatment for mild cases of trigger finger. A brace or splint may be used. Rest may be combined with stretching the tendon.
Hand Care—American Society for Surgery of the Hand
Ortho Info—American Academy of Orthopaedic Surgeons
The Arthritis Society
Salim N, Abdullah S, et al. Outcome of corticosteroid injection versus physiotherapy in the treatment of mild trigger fingers. J Hand Surg Eur Vol. 2011 Aug 4.
Trigger finger. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T114490/Trigger-finger. Updated July 9, 2013. Accessed September 30, 2014.
Vance MC, Tucker JJ, et al. The association of hemoglobin a1c with the prevalence of stenosing flexor tenosynovitis. J Hand Surg Am. 2012 Sep;37(9):1765-1769.
Last reviewed September 2016 by Teresa Briedwell, PT, DPT, OCS
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.