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Study Design.

A multicenter, retrospective study using computed tomographic and magnetic resonance imaging data to establish quantitative, reliable criteria of canal compromise and cord compression in patients with cervical spinal cord injury.

Objectives.

To develop and validate a radiologic assessment tool of spinal canal compromise and cord compression in cervical spinal cord injury for use in clinical trials.

Summary of Background Data.

There are few quantitative, reliable criteria for radiologic measurement of cervical spinal canal compromise or cord compression after acute spinal cord injury.

Methods.

The study included 71 patients (55 men, 16 women; mean age, 39.7±18.7 years) with acute cervical spinal cord injury. Causes of spinal cord injury included motor vehicle accidents (n= 36), falls (n= 20), water-related injuries (n= 8), sports (n= 5), assault (n= 1), and farm accidents (n= 1). Canal compromise was …