3 - Fractures - Principles 3

3 - Fractures - Principles 3 - damage. High energy...

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Bone compsosition
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Bone anatomy
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fracture it’s the break in the continuity of the bone . it could be: 1-simple(closed) 2-compound (open) .
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Causes of fractures 1- sudden truma 2-stress’’fatigue fracture’’. 3-pathological fracture.
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Types of fracture Complete fractures In-complete fractures Physeal fractures Fracture displacement
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Complete fractures: Transverse fracture Oblique or spiral Impacted comminuted
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Transverse fracture
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Oblique fracture
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Impacted fracture
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spiral
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Incomplete fractures The bone is incompletely divided and the periosteum remains in continuity. Exm:greenstick fracture. Stress fracture Compression.
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Fracture displacement We describe it in terms of : Translation ‘’shift’’ Length Alignment ’’angulation’’ Rotation ‘’ twist’’
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Soft tissue damage It could be either: Low energey fractures like closed spiral fractures,and it coz moderate soft tissue
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Unformatted text preview: damage. High energy fractures:like comminuted fracturs and it coz severe tissue damage,no matter whether it open or close. Fracture healing Healing by callus Healing Without callus Time factor The rate of the bone depends on: 1-type of the bone. 2-type of fracture. 3- blood supply 4-general constitution. 5- pt age. Average time for healing Callus visible Upper limb 2-3 weeks Lower limb 2-3 weeks union 4-6 weeks 8-12 weeks consolidation 6-8 weeks 12-16 weeks Fractures that fail to unite(non union) Distraction and separation of the fragments. Interposition of soft tissues between the fragments. Excessive movement at the fracture site Poor local blood supply. Severe damage to soft tissues which makes them non viable. Infx Abnormal bone....
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3 - Fractures - Principles 3 - damage. High energy...

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