Popliteus

Definition

The popliteus is a small muscle located at the back of the knee joint that plays a crucial role in unlocking the knee from a fully extended position by laterally rotating the femur on the tibia. It also helps stabilize the posterior aspect of the knee.

Related terms

Femur:

The thigh bone, which is the longest and strongest bone in the human body, articulating with both the hip and knee joints.

Tibia:

The shinbone or larger and stronger of the two bones in the lower leg, playing a key role in supporting weight.

Knee Joint:

A complex hinge joint formed between three bones - femur, tibia, and patella (kneecap), facilitating movements such as flexion, extension, and slight rotation