Cast Study – James Oliver

Jun 18th, 2015
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Alabama State University
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• When a bone is broken, the periosteum and blood vessels in the cortex, marrow, and surrounding soft tissues are disrupted • Bleeding occurs from the damaged ends of the bone and from the neighbouring soft tissue • A clot (hematoma) forms within the medullary canal, between the fractured ends of the bone, and beneath the peristeum • Bone tissue immediately adjacent to the fracture dies • Dead tissues (along with debris in the fracture area) stimulates and intense inflammatory response characterized by vasodilation, exudation of plasma and leukocytes, and infiltration by inflammatory leukocytes, growth factors, and mast cells that simultaneously decalcify the fractured bone ends • Within 48 hours after the injury, vascular tissue from surrounding soft tissue and the marrow cavity invades the fracture area, and blood flow to the entire bones is increased • Bine-forming cells in the periosteum, edosteum, and marrows are activated to produce subperiosteal procallus along the outer surface

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Cast Study #4 James OliverRecall the Pathophysiology of a fracture from PNB31When a bone is broken, the periosteum and blood vessels in the cortex, marrow, and surrounding soft tissues are disruptedBleeding occurs from the damaged ends of the bone and from the neighbouring soft tissue A clot (hematoma) forms within the medullary canal, between the fractured ends of the bone, and beneath the peristeumBone tissue immediately adjacent to the fracture diesDead tissues (along with debris in the fracture area) stimulates and intense inflammatory response characterized by vasodilation, exudation of plasma and leukocytes, and infiltration by inflammatory leukocytes, growth factors, and mast cells that simultaneously decalcify the fractured bone endsWithin 48 hours after the injury, vascular tissue from surrounding soft tissue and the marrow cavity invades the fracture area, and blood flow to the entire bones is increasedBine-forming cells in the periosteum, edosteum, and marrows are activated to produce subperiosteal procallus along the outer surface of the shaft and over the broken ends of the boneOsteoblasts within the procallus synthesize collagen and matrix, which becomes mineralized to form callusAs the repair process continues, remodelling occursRecall the different types/classifications of fracturesClassification of fractureDescription/examplesComplete-incompleteComplete: Occurs when the bone is broken to form 2 to more separate piecesIncomplete: bone i

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