Diagram Of Trigger Finger

Trigger finger tf is one of the most common upper limb problems to be encountered in orthopedic practice and is also one of the most common causes of hand pain and disability.

Diagram of trigger finger. Trigger finger is a condition in which one of your fingers gets stuck in a bent position. Because fingers are used for many everyday activities they are at higher risk than other parts of the body for traumatic injury including sports injuries workplace injuries and other accidents. Trigger finger is a painful condition that makes your fingers or thumb catch or lock when you bend them. Trigger finger is a condition that causes pain stiffness and a sensation of locking or catching when you bend and straighten your finger.

It results from thickening of the flexor tendon within the distal aspect of the palm. You might hear it called stenosing tenosynovitis. Fingers are easily injured and broken fingers are some of the most common traumatic injuries seen in an emergency room. Why trigger finger placement matters using the tip of the finger to pull the trigger originated in rifle and bullseye pistol shooting.

The condition is also known as stenosing tenosynovitis the ring finger and thumb are most often affected by trigger finger but it can occur in the other fingers as well. The tendons work like long ropes connecting the muscles of the forearm with the bones of the fingers and thumb. Your finger may bend or straighten with a snap like a trigger being pulled and released. Trigger finger or trigger thumb medically known as stenosing tenosynovitis involves the pulleys and tendons in the hand that bend the fingers see diagram.

Trigger finger trigger thumb when involving the thumb is the inhibition of smooth tendon gliding due to mechanical impingement at the level of the a1 pulley that causes progressive pain clicking catching and locking of the digit. To understand where we put our finger on the trigger we have to understand what we re doing when we pull the trigger. In trigger finger inflammation and hypertrophy of the retinacular sheath progressively restricts the motion of the flexor tendon 7 8 this sheath normally forms a pulley system comprised of a series of annular and cruciform pulleys in each digit that serve to maximize the flexor tendon s force production and efficiency of motion. It can affect any finger or more than one.

Finger fractures may account for up to 10 of all bone fractures. It occurs when inflammation narrows the space within the sheath that.