The new tissue formed around the ends of a broken bone. (See BONE, DISORDERS OF.)
n. 1. the composite mass of tissue that forms between bone ends when a fracture is healing. It initially consists of blood clot and *granulation tissue, which develops into cartilage and then calcifies to form bone. Callus formation is an essential part of the process of healthy union in a fractured bone. 2. see callosity.
A diffuse growth of new, soft bone that forms as part of the healing process in a fracture. As healing continues, the callus is replaced by harder bone, and the original shape of the bone is restored.... callus, bony
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