Trigger Finger (Thumb)

Visit our website to learn more about using Nucleus content for patient engagement and content marketing: MEDICAL ANIMATION TRANSCRIPT: Your forearms contain flexor muscles that allow you to bend your fingers. Long cord-like structures called tendons connect these muscles to the bones in your fingers and thumb. A tunnel of tissue called a tendon sheath surrounds each tendon. This allows the tendon to glide smoothly as the fingers move. The sheath is held in place by bands of tissue called pulleys. They hold the tendon close to the bone for optimal functioning of the tendon. When your flexor muscles contract, the pulleys help guide the tendons to flex or bend your fingers. Normally, the tendons glide smoothly through the pulleys when the fingers flex and extend. Trigger finger also known as trigger thumb or stenosing tenosynovitis is a condition where the pulley at the base of your finger becomes inflamed and swollen. This makes it harder for the tendon to move through