Knee joint, also known as the tibiofemoral joint, is a hinge joint that connects the thigh bone (femur) to the shin bone (tibia). There are several synonyms for this joint, including the articulatio genu, patellofemoral joint, and the femorotibial joint. The articulatio genu is a Latin term that describes the joint between the thigh bone and the lower leg, while the patellofemoral joint refers to the joint between the patella (kneecap) and the femur. The femorotibial joint is another name for the knee joint, which describes the joint's connection between the femur and tibia bones. All of these terms refer to the same joint, which is one of the most complex and important joints in the human body.