What Is Decompression Surgery?
Decompression surgery describes a number of different procedures. This type of surgery is used to remove the bone that is compressing the cerebellar tonsils. When successful, this reduces pressure on the brain and spinal cord. It also restores the normal flow of cerebrospinal fluid.
Decompression surgery is performed under general anesthesia.
- First, a small cut is made at the back of the head.
- The muscle is gently moved out of the way.
- A small piece of bone is removed from the bottom of the skull to create the extra space.
During surgery, the surgeon uses imaging technology to view the movement of the cerebellar tonsils and surrounding cerebrospinal fluid. This helps to determine whether the patient will benefit from more extensive decompression. If the space is okay, the surgery is over and the incision is closed.
If more space is needed:
- The surgeon makes a cut in the covering of the brain, called the dura mater.
- The surgeon may need to sew a patch over the opening to keep cerebrospinal fluid from leaking.
- Sometimes, the surgeon may shrink the cerebellar tonsils to make more room for the cerebrospinal fluid to circulate. These tonsils do not have any known purpose.
The surgical technique may vary. If your child has a syrinx or hydrocephalus, they may need a tube (shunt) to drain the excess fluid.
Decompression surgery can take two to three hours. Your child will typically go to the neurosurgical floor after surgery. Sometimes, your child will need to go to the pediatric ICU. Your child will experience pain and swelling after surgery. The neurosurgical team / pain management team will prescribe medicine to make them comfortable during the healing process.
After returning home, your child will need to avoid some activities for a couple of months. These include heavy lifting and contact sports. They should also avoid anything that causes neck strain, such as carrying a heavy backpack. During follow-up appointments in the clinic, your child's doctor will provide specific instructions.