Sacral anterior root stimulated defecation in spinal cord injuries: an experimental study in canine model.

Aim: To investigate whether there was a dominant sacral root for the motive function of rectum and anal sphincter, and to provide an experimental basis for sacral root electrically stimulated defecation in spinal cord injuries.

Methods: Eleven spinal cord injured mongrel dogs were included in the study. After L4-L7 laminectomy, the bilateral L7-S3 roots were electrostimulated separately and rectal and sphincter pressure were recorded synchronously.

Use of a self-designed bladder controller for restoring bladder function in paraplegic dogs.

Objective: To evaluate the results of a self-designed bladder controller for restoring micturition function in paraplegic dogs.

Methods: The spinal cords of 4 dogs were transected above the cone. Electrodes were implanted in S2 bilaterally and connected to the subcutaneous receivers for external activation.