What anatomical region is at the proximal end of the lower extremity?

The proximal end of the lower extremity is referred to as the thigh region. Anatomically, the thigh is located between the hip joint, which connects the lower limb to the pelvic region, and the knee joint. This positioning allows the thigh to play a crucial role in weight-bearing, movement, and stability of the lower body. By definition, "proximal" refers to a point closer to the center of the body, and in this context, the thigh is closest to the torso when compared to other parts of the lower extremity, such as the knee, ankle, and foot regions.

The knee region serves as a joint that connects the thigh to the lower leg, while the ankle and foot regions are further distal from the body's center. Therefore, the thigh region is definitively the anatomical area at the proximal end of the lower extremity.