Complete Lumbar Spine Dislocation With Full Neurological Recovery.

The thoracolumbar region is the most vulnerable segment of the spine to traumatic injuries. It represents a region of transition of the relatively fixed and immobile thoracic spine and flexible lumbar spine. Injuries to the thoracolumbar region often result from high-energy trauma. We present the case of a 24-year-old woman who was brought to the emergency department after a fall from a great height. She presented with severe back pain that was associated with the inability to move both of her lower limbs with absent sensation and loss of urinary and bowel continence. Otherwise, she was hemodynamically stable. The patient underwent a computed tomography scan of the abdomen and pelvis. It demonstrated a complete fracture-dislocation of the second lumbar vertebra relative to the first lumbar vertebra causing shortening of the vertebral column. The second lumbar vertebra had a complete lateral dislocation and appeared in the same axial plane as the first lumbar vertebra giving the appearance of a "double vertebrae" sign. The patient was prepared for emergency open reduction internal fixation with a posterior surgical approach. The operation was done under general anesthesia with the use of sensory-evoked potential responses to avoid any neurological injury. Good realignment of the thoracolumbar spine was achieved. Six months after the operation, the patient was asymptomatic and resumed her regular activities. Complete traumatic lateral dislocation of the lumbar spine is very rare. Early diagnosis of such fracture by computed tomography scan is crucial to avoid maneuvers that may cause unintended spinal cord injuries.