PATHOLOGY

Detailed explanation-1: -This stage begins immediately following the fracture. The blood vessels supplying the bone and periosteum are ruptured during the fracture, causing a hematoma to form around the fracture site. The hematoma clots and forms the temporary frame for subsequent healing.

Detailed explanation-2: -There are four stages in the repair of a broken bone: 1) the formation of hematoma at the break, 2) the formation of a fibrocartilaginous callus, 3) the formation of a bony callus, and 4) remodeling and addition of compact bone.

Detailed explanation-3: -Inflammatory phase (duration: hours–days): Broken bones result in torn blood vessels and the formation of a blood clot or haematoma. The inflammatory reaction results in the release of cytokines, growth factors and prostaglandins, all of which are important in healing.

Detailed explanation-4: -The Inflammatory Stage Some of these special cells cause the injured area to become inflamed (red, swollen, and painful). This tells the body to stop using the injured part so it can heal. Other cells that come to the area during this stage form a hematoma (blood clot) around the broken bone.

Detailed explanation-5: -There are 5 phases to bone healing: haematoma, inflammation, proliferation, callus formation, and remodelling.