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Classification of Carpal Instability

Instability                       Dislocation   Fracture-Dislocation
Perilunate                                     Transosseous
CID type                                     Transscaphoid perilunate
Scapholunate dissociation             Transradiaalstyloid perilunate
Lunotriquetral dissociation
Radiocarpal
CIND type                       Dorsal         Dorsal Barton's
VISI                         Volar           Volar Barton's
DISI                         Ulnar           Radial Styloid w/ carpal
Ulnar Translation                               translation
Lunate fossa w/ carpal
translation
Midcarpal
CIND type                                       Malunited Colles (rare)
Triquetrohamate (VISI >DISI)
Scaphotrapeziotrapezoidal (VISI)
Capitolunate (DISI > VISI)
Diffuse laxity (DISI > VISI)