Tscherne Classification

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Tscherne classification

It considers : 

  • Wound size
  • Level of contamination
  • Fracture mechanism.

 Grade I:

  • A small puncture wound without associated muscle contusion
  • Negligible bacterial contamination.
  • These injuries result from a low-energy mechanism of injury.

 Grade II:

  • A small skin laceration, minimal soft-tissue contusion
  • Moderate bacterial contamination.
  • These injuries can result from a variety of mechanisms of injury.

 Grade III:

  • Large laceration and extensive softtissue damage
  • Heavy bacterial contamination .
  • These injuries are frequently associated with arterial or neural injury.

 Grade IV:

  • Incomplete or complete amputation with variable prognosis based on location of and nature of injury.

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