Extensor tendons are fibrous tissues that connect muscles to bones in the hand and foot. They play a crucial role in extending or straightening the fingers and toes, allowing for movements like grasping and walking. These tendons run along the back of the limbs and are essential for proper function. Injuries to extensor tendons can lead to conditions such as tendonitis or ruptures, which may impair movement. Treatment often involves rest, physical therapy, or in some cases, surgery to repair the damaged tendon. Proper care is important to restore full function and prevent long-term complications.