Which tissue heals primarily through callus formation during healing?

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Multiple Choice

Which tissue heals primarily through callus formation during healing?

Callus formation is the hallmark of bone healing. When a bone fractures, cells from the periosteum and endosteum form a soft fibrocartilaginous callus that bridges the gap and stabilizes the ends, which then mineralizes into a hard bony callus and is remodeled over time into mature bone. Skin heals mainly by epithelial regeneration and scar formation, not by a bridging callus. Nerves regenerate only to a limited extent and do not form a bridging callus, and cartilage heals slowly because it is avascular and does not create a true callus across a fracture.

Callus formation is the hallmark of bone healing. When a bone fractures, cells from the periosteum and endosteum form a soft fibrocartilaginous callus that bridges the gap and stabilizes the ends, which then mineralizes into a hard bony callus and is remodeled over time into mature bone. Skin heals mainly by epithelial regeneration and scar formation, not by a bridging callus. Nerves regenerate only to a limited extent and do not form a bridging callus, and cartilage heals slowly because it is avascular and does not create a true callus across a fracture.

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