Cartilage is made up of cells and fibers and is found mostly in joints.
Casts immobilize the joint above and the joint below the area that is to be kept straight and without motion. For example, a child with a forearm fracture will have a long arm cast to immobilize the wrist and elbow joints. It affects the bones, muscles, tendons, and blood vessels and can affect one or both feet. The foot is usually short and broad in appearance and the heel points downward while the front half of the foot, or forefoot, turns inward. The heel can appear narrow and the muscles in the calf are smaller compared to a normal lower leg.