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38 Cards in this Set
- Front
- Back
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Primary Bone Healing
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Healing under conditions of
STABILITY FIBROCARTILAGENOUS PHASE BYPASSED HAVERSION REMODELLING: CUTTING CONES |
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Secondary Bone Healing
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Healing under conditions of
INSTABILITY FIBROCARTILAGENOUS PHASE ACTIVATED |
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Bone Healing In Unstable Conditions
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Goals of Surgery
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Biomechanics of Callus Healing
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Soft Callus
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Hard Callus
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Remodelling
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Fracture Healing Under Absolute Stability (Primary
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Primary Bone Healing
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Contact healing:
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Gap healing
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Internal Fixation AO Principles
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Fundamental Principles
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Pauwels Principle
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neutralization plate
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buttress plate
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Dynamic Compression Plate
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Limited Contact Dynamic Compression Plate: LCP
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Grooves on the underside to decrease devascularization of bone.
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Locking plates
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Screws locks into plate instead of compressing plate to bone, similar to external fixator. Mechanically more stable, for example in pt’s with OP bone
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Antiglide Plate
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OSTEOGENESIS
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Formation of new bone from living cells in BG.
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OSTECONDUCTION
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Ability of graft to function as a scaffold for stability and to allow cell ingrowth.
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OSTEOINDUCTION
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Process where a multitude of growth factors and hormones within the extracellular matrix recruit mesenchymal stem cells to migrate to site and differentiate into viable osteoblasts.
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Osteoconduction limited by factors such as:
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Osteoconductive materials
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Hydroxyapatite
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Calcium Sulfate
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Osteoinductive materials
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Also minimally by autograft and allograft.
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Function of Bone Grafts
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Creeping Substitution
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Cortical Bone graft
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Cancellous Bone graft
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Sites for Autografts
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Delayed Union
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ETIOLOGY OF NON UNIONS
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non union is...
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Failure to achieve osseous healing within 8-9 months post injury/surgery.
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Hypertrophic Non Unions
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