In the bone healing time frame, which phase occurs during 2-6 weeks?

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Multiple Choice

In the bone healing time frame, which phase occurs during 2-6 weeks?

During the 2-6 week window, the fracture moves into the soft callus stage. After the initial inflammatory cleanup, mesenchymal cells from the periosteum and surrounding tissues differentiate into fibroblasts and chondroblasts, forming a fibrocartilaginous matrix that bridges the gap. This soft callus stabilizes the fracture and provides a scaffold for minerals to be deposited later. It isn’t yet mineralized or as rigid as bone, which is why this period is characterized by a flexible, cartilaginous bridging tissue rather than solid bone. As healing progresses, this soft callus is gradually replaced by mineralized woven bone, forming the hard callus, and eventually remodeling restores the bone’s original structure.

During the 2-6 week window, the fracture moves into the soft callus stage. After the initial inflammatory cleanup, mesenchymal cells from the periosteum and surrounding tissues differentiate into fibroblasts and chondroblasts, forming a fibrocartilaginous matrix that bridges the gap. This soft callus stabilizes the fracture and provides a scaffold for minerals to be deposited later. It isn’t yet mineralized or as rigid as bone, which is why this period is characterized by a flexible, cartilaginous bridging tissue rather than solid bone. As healing progresses, this soft callus is gradually replaced by mineralized woven bone, forming the hard callus, and eventually remodeling restores the bone’s original structure.

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