A model of experimental spinal cord trauma based on computer-controlled intervertebral distraction: characterization of graded injury.

Study Design: : A new model of experimental spinal cord injury is detailed based on the application of tensile (distraction) force to the vertebral column of the rat.

Objectives: : To develop an experimental model of graded spinal cord injury by application of tensile forces to the vertebral column.

Summary Of Background Data: : Distraction is frequently an integral component of human spinal cord injury, but the acute application of tensile forces to the spinal cord has not been modeled rigorously.