Trigger finger (or thumb) is a condition that results from swelling within the tendon that bends the fingers. This tendon is held close to the bone by a series of pulleys that are similar in function to the line guides on a fishing pole. As the tendon swells, a nodule forms that catches on these pulleys. This catching leads to clicking or snapping of the tendon as it passes beneath the pulley. As the condition progresses, locking of the finger in either an open or closed position is common. Pain may be present and is often felt at the base of the finger where it meets the palm.
Trigger finger (or thumb) is a condition that results from swelling within the tendon that bends the fingers. This tendon is held close to the bone by a series of pulleys that are similar in function to the line guides on a fishing pole. As the tendon swells, a nodule forms that catches on these pulleys. This catching leads to clicking or snapping of the tendon as it passes beneath the pulley. As the condition progresses, locking of the finger in either an open or closed position is common. Pain may be present and is often felt at the base of the finger where it meets the palm.