Unilateral facet injuries occur in 4-16% of patients with cervical spine injuries, (of which unilateral facet subluxations occur as a subgroup in this population). These injuries arise in motor vehicle accidents because of flexion-distraction forces, or flexion of an already rotated head.Due to the common presentation of a lack of neurological signs and symptoms, delayed diagnosis of unilateral facet subluxations are common. As a result, it is imperative that the proper diagnosis is made so that patient care can be made more effective with ultimately less sequelae. For the clinician, diagnosis can be aided by the use of radiographic analysis.Adequate radiographic analysis is an important tool to accurately assess whiplash associated disorders. Radiographic findings of facet subluxations are subtle on routine views. Utilizing oblique views, the diagnoses are usually evident. Therefore, oblique views are very useful in the clinical setting.This case report will describe a 29-year-old female with a missed unilateral facet subluxation, radiographic findings and characteristics, and the clinical utility of oblique views in patients suffering from whiplash associated disorders.
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