Hamstring tendons

A group of tendons located at the back of the thigh, connecting important muscles to the bones.

Hamstring tendons refer to a collection of long, fibrous connective tissues that attach the hamstring muscles to the bones of the pelvis and lower leg. These tendons play a crucial role in the movement and stability of the leg, facilitating activities such as walking, running, and jumping.

Terminologia Anatomica

tendines musculi hamstring

System

Muscular system

Function

The primary function of the hamstring tendons is to anchor the hamstring muscles—semitendinosus, semimembranosus, and biceps femoris—to the pelvic bone and the tibia or fibula in the lower leg. This anchorage is vital for a variety of leg motions, allowing for flexion of the knee and extension of the hip. When one runs or kicks, the hamstring muscles contract and pull on these tendons, enabling movement and providing the power required to propel the body forward. Additionally, the hamstring tendons contribute to joint stability, helping maintain proper alignment and preventing excessive motion that could lead to injuries.

Location

The hamstring tendons are located at the posterior aspect of the thigh. They originate from the ischial tuberosity, part of the pelvis, and extend downwards, crossing the knee joint before attaching to either the tibia or fibula in the lower leg. Specifically, the tendons of the semitendinosus and semimembranosus insert onto the medial side of the tibia, while the biceps femoris has two heads with its long head attaching to the ischial tuberosity and its short head coming from the femur before inserting onto the fibula. This strategic positioning allows the tendons to effectively support both knee and hip movements.

Did You Know?

Hamstring injuries are among the most common in sports, often occurring due to sudden starts or overstretching.
The term 'hamstring' is derived from the Old English 'ham' (the back of the leg) and 'string' (due to the tendon-like structure).
Strengthening the hamstring tendons can help prevent injuries to the knee and lower back.