What parts are included in the lower extremity?

The lower extremity refers specifically to the parts of the body that are involved in locomotion and support, which include the thigh, leg, ankle, and foot. Understanding the anatomy of the lower extremity is essential in sports medicine as it plays a critical role in movement and balance. The thigh contains the femur and muscles responsible for hip movement, while the leg consists of the tibia and fibula, contributing to stability and mobility. The ankle connects the leg to the foot and allows for a range of motion essential for walking and running. Lastly, the foot is crucial for weight-bearing and propulsion during movement. Each component of the lower extremity works together to facilitate activities such as standing, walking, and athletic performance. The other options relate to different body regions that do not pertain specifically to the lower extremity.