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Talus Fractures: Evaluation and Treatment

Dr. Fortin is Attending Orthopaedic Surgeon, William Beaumont Hospital, Royal Oak, Mich. Dr. Balazsy is Fellow, Department of Orthopaedic Surgery, William Beaumont Hospital.

Reprint requests: Dr. Fortin, Suite 100, 30575 North Woodward Avenue, Royal Oak, MI 48073-6941.

Fractures of the talus are uncommon. The relative infrequency of these injuries in part accounts for the lack of useful and objective data to guide treatment. The integrity of the talus is critical to normal function of the ankle, subtalar, and transverse tarsal joints. Injuries to the head, neck, or body of the talus can interfere with normal coupled motion of these joints and result in permanent pain, loss of motion, and deformity. Outcomes vary widely and are related to the degree of initial fracture displacement. Nondisplaced fractures have a favorable outcome in most cases. Failure to recognize fracture displacement (even when minimal) can lead to undertreatment and poor outcomes. The accuracy of closed reduction of displaced talar neck fractures can be very difficult to assess. Operative treatment should, therefore, be considered for all displaced fractures. Osteonecrosis and malunion are common complications, and prompt and accurate reduction minimizes their incidence and severity. The use of titanium screws for fixation permits magnetic resonance imaging, which may allow earlier assessment of osteonecrosis; however, further investigation is necessary to determine the clinical utility of this information. Unrecognized medial talar neck comminution can lead to varus malunion and a supination deformity with decreased range of motion of the subtalar joint. Combined anteromedial and anterolateral exposure of talar neck fractures can help ensure anatomic reduction. Posttraumatic hindfoot arthrosis has been reported to occur in more than 90% of patients with displaced talus fractures. Salvage can be difficult and often necessitates extended arthrodesis procedures.