👉 Plankage is a term used in medicine to describe a type of bone that grows into an exostoma, a thickened area on the surface of a bone. Plankage occurs when osteoblasts (osteoclasts) divide and grow out of their normal resting sites in the bone. This can lead to the formation of a thin layer of calcium carbonate around the growth plate, which is usually a hollow space that can be filled with bone tissue. Plankage can also