Which group of muscles work together to flex the tibiofemoral joint?

The group of muscles that work together to flex the tibiofemoral joint, commonly known as the knee joint, is best represented by the biceps femoris, gracilis, and sartorius. The biceps femoris is one of the hamstring muscles, which are primarily responsible for flexing the knee and extending the hip. Gracilis, a muscle located in the inner thigh, assists in this action as well by contributing to the flexion at the knee. Sartorius, the longest muscle in the human body, originates from the anterior superior iliac spine and also plays a role in knee flexion.

This combination of muscles effectively pulls the lower leg upwards towards the thigh, engaging in flexion at the tibiofemoral joint. While the semitendinosus and semimembranosus are also knee flexors, they were not included in the selected answer. The quadriceps group, on the other hand, is primarily responsible for extending the knee rather than flexing it. Similarly, the adductor magnus and pectineus focus more on the adduction or flexion of the hip rather than the action of flexing the knee joint itself. Therefore, the biceps femoris, gracilis,