What is the primary role of the popliteus muscle?

The primary role of the popliteus muscle is to medially rotate the tibia. This muscle is located at the back of the knee and plays a crucial role in the unlocking mechanism of the knee joint. When the knee is fully extended, the tibia is externally rotated to lock it in place; the popliteus muscle contracts to medially rotate the tibia and unlock the knee, allowing for flexion. Its function is essential for smooth knee movement, especially during activities that involve bending the knee after it has been straightened.

Understanding the biomechanics of the knee joint highlights the importance of the popliteus in providing stability and facilitating motion, which is particularly important in sports massage practice for athletes who rely on knee flexibility and mobility in their performance.