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
Articular capsule of the knee joint cartilage margin. Both the lateral and medial meniscus are, however, located within the synovial capsule. It is a thin, but strong, fibrous membrane which is strengthened in almost its entire extent by bands inseparably connected with it. Above and in front, beneath the tendon of the Quadriceps femoris, it is represented only by the synovial membrane. Its chief strengthening bands are derived from the fascia lata and from the tendons surrounding the joint. The numerous bursae surrounding the knee joint can be divided into the "communicating" and the "non-communicating" bursae: Adding to the complex structure of the knee space, there