Injuries in this powerful muscle group are common, especially in athletes. Hamstring injuries happen to all types of athletes, from Olympic sprinters to slow-pitch softball players. Though these injuries can be very painful, they will usually heal on their own. But for an injured hamstring to return to full function, it needs special attention and a specially designed rehabilitation program.
This guide will help you understand:
- how the hamstrings work
- why hamstring injuries cause problems
- how doctors treat the condition
Where are the hamstrings, and what do they do?
The hamstrings make up the bulk in back of the thigh. They are formed by three muscles and their tendons. The hamstrings connect to the ischial tuberosity, the small bony projection on the bottom of the pelvis, just below the buttocks. (There is one ischial tuberosity on the left and one on the right.) The hamstring muscles run down the back of the thigh. Their tendons cross the knee joint and connect on each side of the shinbone (tibia).
The hamstrings function by pulling the leg backwards and by propelling the Healthy Body forward while walking or running. This is called hip extension. The hamstrings also bend the knees, a motion called knee flexion.
Most hamstring injuries occur in the musculotendinous complex. This is the area where the muscles and tendons join. (Tendons are bands of tissue that connect muscles to bones.) The hamstring has a large musculotendinous complex, which partly explains why hamstring injuries are so common.