Trigger Finger: Causes, Diagnosis, and Treatment Options Locking of a finger is characteristic of 'trigger finger', also termed stenosing tenosynovitis, which is a benign entity that is treated with corticosteroid...
Trigger Finger: Causes, Diagnosis, and Treatment Options Locking of a finger is characteristic of 'trigger finger', also termed stenosing tenosynovitis, which is a benign entity that is treated with corticosteroid injection for symptom resolution. Patients complaining of a snapping finger are typically diagnosed with a trigger finger. These common entities tend to occur more in diabetic patients.
The incidence of a trigger finger in non-diabetics is 2-3% and rises to 10% in diabetics. Hyperglycemia can cause crosslinks to form between the collagen molecules of the flexor tendon leading to the development of a trigger finger. Being a female and age greater than 60 years old are also risk factors for developing a trigger finger.
A trigger finger is also known as a stenosing tenosynovitis. The snapping that occurs with a trigger finger is due to impingement of a hypertrophied flexor tendon sheath as it glides under the A1 pulley. Case A 43 year old patient complains of locking and sticking of their third digit of the right hand.
Which of the following is a risk factor for developing a trigger finger? A) Right hand dominant B) History of diabetes mellitus type II C) Adolescents D) Men Diagnosis The diagnosis of a trigger finger is typically a clinical diagnosis. Patients will complain of a painful or stiff finger that may lock with finger flexion.
Providers should palpate over the A1 pulley at the level of the MCP joint to evaluate for a palpable nodule. Ultrasound can also be used to evaluate the quality of the flexor tendon and pulley. Ultrasound findings seen with a trigger finger include increased flexor tendon thickness, fluid overlying the tendon sheath, thickening of the A1 pulley, and tendon sheath cyst.
If you are experiencing symptoms that may be related to trigger finger review, it is important to see a sports medicine physician. Early evaluation and treatment typically lead to better outcomes. Do not ignore pain or symptoms that are limiting your activity.
*This article is for educational purposes only and does not substitute for professional medical advice. Always consult a qualified healthcare provider.*
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