Final answer:
The hip joint comprises the fused ilium, ischium, and pubis known as the hip bone, while the knee joint includes the femur, tibia, and patella. In total, the knee is made of three bones and the hip is formed by one bone that consists of three fused bones.
Step-by-step explanation:
The hip and knee are important joints in the body formed by the articulation of bones. The hip joint is a ball-and-socket joint consisting of the femur and the pelvic girdle, which is made up of the ilium, ischium, and pubis that fuse together. The hip bone, also known as the coxal bone, forms the pelvis portion of the pelvic girdle.
The knee joint is the largest joint in the human body and consists of three bones: the femur, tibia, and patella. The patella, also known as the kneecap, is embedded in the quadriceps tendon and is a triangular bone that lies anterior to the knee joint. It functions to improve knee extension by reducing friction. Therefore, the hip is made up of three bones (ilium, ischium, and pubis), which form one bone, the hip bone, and the knee is made up of three bones (femur, tibia, and patella).