Classifications in Brief: The Hawkins Classification for Talus Fractures
2015
As reported by Coltart [5], Fabricius von Hilden first described talus injuries in 1608, and in 1919, Anderson et al. [1] reported a series of talus fracture dislocations in which they emphasized dorsiflexion as the mechanism of injury and coined the term ‘‘aviator’s astragalus’’ (astragalus being another term for talus) because of the impressive frequency with which the mechanism—aircraft accidents— was associated with the injury in question. In 1952, Coltart [5] reported on 228 talus injuries treated by surgeons in the British Royal Air Force in an attempt to describe the variety of injuries that occur to the talus and surrounding joints. He described various talus fracture patterns, fracture-dislocation combinations, and isolated peritalar dislocations [5]. Others have presented case series of talus injuries and associated rarely used classification schemes [15, 19], but all have noted high complication rates with injuries to the talus [5, 11, 15, 19]. In 1970, proposed treatment strategies for vertical fractures of the talar neck ranged from nonoperative management to urgent open reduction internal fixation, bone graft augmentation, fusion of the dorsal talus to the distal tibia, and even complete talectomy [11]. Although the importance of early, anatomic reduction of these injuries was noted at that time, the incidence of avascular necrosis (AVN) was not. In 1970 Hawkins [11] described injury patterns and AVN rates in a series of 57 vertical talar neck fractures in 55 patients from three different institutions. All 55 patients sustained forced dorsiflexion injuries, similar to the mechanism described by Anderson et al. [1] in pilots.
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