Bone remodeling during growth is an intricate process involving both bone deposition and bone resorption. During growth in length, the correct proportion of diaphysis to epiphyses must be maintained. Simultaneously, a bone must also increase in diameter as it supports the increased body mass associated with increased height. These two sketches illustrate changes occurring to a long bone during growth in length. The yellow bone is the original size of the bone, and the red bone is the same bone after a period of growth.