What happens during combined rhizotomy surgery?

Also known as dorsal/ventral rhizotomy, combined rhizotomy is a minimally invasive spinal operation that can permanently reduce leg tightness (tone) from spasticity and dystonia. Dr. Weston Northam, neurosurgeon and co-director of the Cerebral Palsy and Spasticity Center at Boston Children’s, explains what happens during combined rhizotomy surgery.