What Is a Flexor Tendon Injury?
Flexor tendon injuries involve damage to the cord-like bands of tissue that run from the forearm, across the wrist, and into the fingers. When muscles in the hand contract, these tendons pull the bone and cause the joint to move. This pulling action allows people to bend their fingers, grasp an object, or make a fist.
Injuries to the flexor tendons can occur from a cut on the fingers, hands, or wrist that slices through and severs the tendon. Other injuries occur when a strong force pulls a finger open while the person is trying to close it. The force pulls the tendon away from the bone, causing a tear or rupture. Both types of flexor tendon injuries can interfere with hand movement, limiting a person’s ability to bend joints in their hand.