What Is a Canthoplasty?

Double-opening spinal canaloplasty is suitable for patients with scattered or continuous posterior longitudinal ligament ossification with spinal cord compression symptoms, difficult to decompress in anterior surgery and cervical spondylosis who have performed anterior decompression and still have symptoms of spinal cord compression Cervical spondylosis involves more than three segmental lesions and symptoms of spinal stenosis and spinal cord compression. Decompression is achieved by surgery.

Double-door spinal angioplasty

Double-opening spinal canaloplasty is suitable for patients with scattered or continuous posterior longitudinal ligament ossification with spinal cord compression symptoms, difficult to decompress in anterior surgery and cervical spondylosis who have performed anterior decompression and still have symptoms of spinal cord compression Cervical spondylosis involves more than three segmental lesions with spinal stenosis and spinal cord compression symptoms, which is achieved by surgery

1. Cervical spondylosis involves more than three segmental lesions with spinal stenosis and spinal cord compression

1. The surgical design before surgery is extremely important.

Local or general anesthesia.

1. Posture, incision and lamina exposure are the same as single open-end spinal canaloplasty.

2. Lamina shaping cleans up the residual soft tissue on the lamina, and according to the transverse diameter value of the spinal canal of the CT film, a groove is made on the lamina and marks are made. Use a miniature drill or sharp-mouthed bite forceps to make a longitudinal groove on each side of the vertebral plate. The groove is V-shaped, with a shallow layer width of 2 to 3 mm. The depth needs to be deep to the inner cortex of the lamina, but it does not penetrate. The gauze is blocked with a small strip of gauze. Then the interspinous process ligament within the predetermined opening range was removed, and the spinous process remained 1 to 1.5 cm long. Use a mini electric saw or narrow laminar bone bite forceps to split the spinous process longitudinally to the epidural. Cut the ligamentum flavum on the uppermost lamina of the open segment and the ligamentum flavum on the lower edge of the lowermost lamina, extend from the spinous process slit into the periosteal stripper, and open the split spinous process to both sides, similar to opening Double doors. At the same time, the ligamentum flavum was cut midline, and the adhesion between the lamina and the dura mater was separated with a dural stripper. Take the same width and length as the exposed dura mater

1. The purpose of open door surgery is to enlarge the spinal canal, so that the compressed spinal cord can be decompressed and restored to function. Therefore, adequate and moderate enlargement of the spinal canal is the key to successful surgery. Too little can not achieve the purpose of decompression, too large will leave a cavity outside the dura mater and form scar compression. The spinal canal enlargement should be the volume after the dural sac is fully inflated and the pulse is restored. The outer layer can be left with a space covered by a thin layer of fat film. At the same time, the position of the groove on both sides should be the outermost edge of the spinal canal. The most common error is that the position is too close to the inside. After the door is opened, there will still be protrusions to compress the spinal cord and affect the spinal cord.

1. Wear a plaster neck collar after surgery to limit neck movement, but can get up early.

2. Negative pressure drainage was removed 48 to 72 hours after surgery or the daily exudation volume did not exceed 20ml.

3. The suture was removed 10 days after the operation, and the plaster was removed 8 to 12 weeks later for X-ray and CT review. After the bone graft heals, you can use the neck circumference protection to gradually increase the activity.