Anterior compartment of thigh Anterior compartment of thigh The anterior compartment of thigh contains muscles which extend the knee and flex the hip. The anterior compartment is one of the fascial compartments of the thigh that contains groups of muscles together with their nerves and blood supply. The anterior compartment contains the sartorius muscle (the longest muscle in the body) and the quadriceps femoris group, which consists of the rectus femoris muscle and the three vasti muscles – the vastus lateralis, vastus intermedius, and the vastus medialis. The iliopsoas is sometimes considered a member of the anterior compartment muscles, as is the articularis genus
Human leg In human anatomy, the lower leg is the part of the lower limb that lies between the knee and the ankle. The thigh is between the hip and knee and makes up the rest of the lower limb. The term lower limb or "lower extremity" is commonly used to describe all of the leg. This article generally follows the common usage. The leg from the knee to the ankle is called the "crus" or "cnemis" . The calf is the back portion, and the tibia or shinbone together with the smaller fibula make up the front of the lower leg.