Abstract
Background/Objectives: Unilateral and bilateral cervical facet subluxations, dislocations, and/or fractures may be managed with anterior, posterior, or combined surgical approaches. The primary objective of this study was to identify radiographic features that predispose to poor radiographic outcomes (kyphosis) when these injuries are treated with single segment posterior cervical instrumentation and fusion. Method: A retrospective radiographic review was performed on 65 patients whose unilateral or bilateral facet subluxation/dislocations or fracture dislocation was managed with single segment posterior cervical instrumentation and fusion. The pre- and postoperative plain radiographs, CT, and MRI were assessed to identify the fracture type, degree of kyphosis, translation, and radiographic failure. Results: 2 patients (3.5%) demonstrated gross radiographic failure of the posterior instrumentation. Both had bilateral facet subluxation without fracture and ultimately required anterior revision. Kyphosis at...
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