The femur, commonly known as the thigh bone, is located in the upper leg of the human body. It is the longest and strongest bone, extending from the hip joint down to the knee joint. The top end of the femur connects to the pelvis at the hip joint, while the bottom end connects to the knee, helping to support the weight of the body during movements like walking, running, and jumping.
The femur plays a crucial role in maintaining overall posture and movement. It also serves as an attachment point for several muscles, tendons, and ligaments that facilitate leg motion.