There are five steps to the procedure, which generally takes 1 hour for each vertebra treated.

Step 1: Prepare the patient
You will lie on the operative table and be given conscious sedation. Once sedated, you will be positioned on your stomach with your chest and sides supported by pillows. Depending on the section of the spine (cervical, thoracic, or lumbar) where the compressed vertebra is located, your back or neck will be cleansed and prepped.

Step 2: Insert the needle
A local anesthetic is injected in the area where a small, half-inch skin incision will be made over the fractured bone. With the aid of a fluoroscope (a special X-ray), two large diameter needles are inserted into the vertebral body through the pedicles (Fig 2). The fluoroscopy monitor allows the surgeon to see exactly where the needles are positioned and how far they are inserted. The needles are advanced through the bone using either a twisting motion or a tapping mallet. The needles are angled to avoid the spinal cord. Depending on the vertebral level, a single needle may be used.

Step 3: Restore vertebra height (kyphoplasty only)
If the vertebra is significantly wedge-shaped, the surgeon will insert inflatable balloons through the needles into the vertebra. To insert the balloon tamps, the surgeon first uses a drill to create a working channel. The surgeon carefully inflates the balloons, raising the vertebra back to its normal height (Fig. 3). The amount of height restored depends on the age of the fracture. The balloons are deflated and withdrawn, leaving a space in the middle of the vertebra. This procedure is called kyphoplasty because it reduces unwanted kyphosis, or forward curvature, before the bone is stabilized.

Step 4: Inject bone cement
Bone cement is slowly injected under pressure, filling the deepest area first, then withdrawing the needle slightly to fill top areas (Fig 4). The pressure and amount of cement injected are closely monitored to avoid leakage into unwanted areas. While complete filling of the vertebral body is ideal, it is not always possible or necessary for pain relief.

Step 5: ClosureThe needles are withdrawn promptly before the cement hardens. The small skin incision is closed with skin glue or steri-strips. You will not be moved from the operating table until the remaining cement in the mixing bowl hardens.