Talar neck fractures can be graded according to the Hawkins classification 1:
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type I: non displaced fracture
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type II: displaced fracture with subluxation or dislocation of the subtalar joint and a normal ankle joint
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type III: displaced fracture with body of talus dislocated from both subtalar and ankle joint
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type IV: Canale and Kelly 2 described a rare additional category which in addition to features described for type III there is dislocation or subluxation of the head of the talus at the talonavicular joint.