Laminoplasty is a surgical procedure for the spine where the surgeon removes the bone located at the back of the spinal canal. The surgeon then proceeds to free the nerves, remove tumours, etc but after the decompression is achieved, the surgeon will replace the bone and screw it back in place to create a larger opening in the spinal canal.
This is a common procedure for those with multiple level cervical spine compression where anterior surgery (from the front of the neck) would be excessive. It allows for good decompression for a larger area of the spinal canal.
James Tan