Fibrocartilage callus

Comminuted midshaft humerus fracture with callus formation.

A fibrocartilage callus is a temporary formation of fibroblasts and chondroblasts which forms at the area of a bone fracture as the bone attempts to heal itself. The cells eventually dissipate and become dormant, lying in the resulting extracellular matrix that is the new bone. The callus is the first sign of union visible on x-rays,usually 3 weeks after the fracture. Callus formation is slower in adults than in children, and in cortical bones than in cancellous bones.

External links

Bony callus at the US National Library of Medicine Medical Subject Headings (MeSH)

Bone and cartilage

Cartilage

Bone

Ossification	intramembranous endochondral

Cells	osteoblast osteoid osteocyte osteoclast

Types	cancellous cortical

Regions	subchondral bone epiphysis epiphyseal plate/metaphysis diaphysis Condyle Epicondyle

Structure	Osteon Haversian canals Volkmann's canals connective tissue endosteum periosteum Sharpey's fibres enthesis lacunae canaliculi trabeculae medullary cavity bone marrow

Shapes	long short flat irregular sesamoid

Index of bones and cartilage

Description	Anatomy bones skull face neurocranium compound structures foramina upper extremity torso pelvis lower extremity Physiology Development Cells

Disease	Congenital Neoplasms and cancer Trauma fracture Other Symptoms and signs eponymous

Treatment	Procedures Drugs Surgery approaches

Fibrocartilage callus

See also

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