• What is trigger finger?
• What causes trigger finger?
• What is treatment for trigger finger?

What is trigger finger?

Trigger finger (medically termed stenosing tenosynovitis) is a "snapping" of any of the digits of the hand when opened or closed. Typically, trigger finger is noted when either the ring, middle, or index finger attempts to flex closed while gripping. Instead of a smooth, continual closure, the digit stutters, then snaps closed. The closure is frequently associated with pain at the base of the digit on the palm of the hand. Trigger finger can affect the thumb.

What causes trigger finger?

Trigger finger is caused by local swelling from inflammation or scarring around the tendons that normally pull the affected digit inward toward the palm (flexion). Usually trigger finger occurs as a condition alone. Sometimes trigger finger is an associated condition resulting from an underlying illness that causes inflammation of tissues of the hand, such as rheumatoid arthritis.

What is treatment for trigger finger?

Stretching, ice, and antiinflammation treatments can be helpful. Most patients respond to a local cortisone injection around the affected tendon. When trigger fingers persist after two injections and are not responsive to the above treatments, surgical procedures to remove the inflamed or scarred tissue can be beneficial.

Author: William C. Shiel Jr., MD, FACP, FACR

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