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principles of fracture fixation

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principles of fracture fixation …

principles of fracture fixation

by Wafer Aldulaimi
Orthopaedic surgeon _ Denmark

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  • 1. + Principles of fracture fixation
  • 2. + Absolute stability No micromotion in the fracture  healing by primary (direct) bone without callus formation
  • 3. + Relative stability There is some motion in the fracture fragments  stimulation of callus formation  secondary bone healing by callus formation
  • 4. + Perren's strain theory
  • 5. + Fracture Simple fracture (<2 mm) Multifragmentary (>2 mm) Relative stability Bone resorption, healing delay, or nonunion Secondary bone healing (callus) Absolute stability Primary bone healing, osteonal remodelling Bone resorption, healing delay, or nonunion
  • 6. + Methods of absolute stability Compression by Lag Screw
  • 7. + Compression plate
  • 8. + Dynamic compression by Tension band
  • 9. + Methods of relative stability Bridging plate
  • 10. + intramedullary nailing
  • 11. + External fixation
  • 12. + Home message  Simple diaphysialfracture anatomical reduction and absolute stabilization  Intraarticular fracture  anatomic congruity of the joint surface must be restored and the fragments should be fixed rigidly by interfragmentary compression  Diaphysialmultifragmentaryfracture god alignment in all planes and relative stabilization.
  • 13. + References:  AO Principles of Fracture Management: Thomas P. Ruedi , William M. Murphy  Rockwood and Green's Fractures in Adults

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