Human leg the femur. All four muscles unite in a common tendon inserted into the patella from where the patellar ligament extends it down to the tibial tuberosity. Fibers from the medial and lateral vasti form two retinacula that stretch past the patella on either sides down to the condyles of the tibia. The quadriceps is "the" knee extensor, but the rectus femoris additionally flexes the hip joint, and articular muscle of the knee protects the articular capsule of the knee joint from being nipped during extension. The sartorius runs superficially and obliquely down on the anterior side of the thigh, from
Over-the-knee boot are available with boots attached or can have attached stocking feet (usually made of the wader material), to wear inside shorter boots. In addition to being used for leisure purposes, such as angling or waterfowl hunting, industrial, heavy-duty waders are used as protective clothing in the chemical industry, agriculture and in the maintenance of water supply, sewerage and other utilities. Over-the-knee boot Over-the-knee boots (or cuissardes, which include thighboots, top boots, hip-boots, and waders), "OTK boots", are long boots that fully or partly cover the knee. Originally created as a man's riding boot in the 15th century, in the latter