Popliteus - Muscle Physiology & Functional Anatomy
More Images of the Popliteus Muscle
More Information about the Popliteus Muscle
The popliteus muscle has many functions
because it has the ability to reverse its origin and insertion, depending on
whether the femur or the tibia is fixed.
The popliteus muscle helps internally rotate the tibia in a knee that is already
extended. Because of the countour of the femoral condyles, this internal
rotation "unlocks" the knee if fully extended. Therefore popliteus muscle
is often referred to as the "Key" to unlocking the knee!
A short & tight popliteus muscle can cause pain near its tendinous origin at the