Mayfield classification of carpal instability (perilunate instability)

Mayfield classification of carpal instability, also known as perilunate instability classification (carpal dislocations), describes carpal ligament injuries. 

Instability has been divided into four stages 1-2:

History and etymology

This classification was described by Mayfield et al. in 1980 1.

Wrist pathology

Article information

rID: 1057
Synonyms or Alternate Spellings:
  • Carpal dislocation

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Cases and figures

  • Figure 1: Progressive perilunate instability
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  • Case 1 : perilunate dislocation
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  • Case 1 : perilunate dislocation
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  • Case 2 : scapholunate dissociation
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  • Case 2 : scapholunate dissociation
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  • Case 3 : lunate dislocation
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  • Case 4 : scapholunate dislocation
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  • Case 5 : stage IV
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  • Case 6: Midcarpal (lunotriquetral) dislocation
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