Pedicle Subtraction Osteotomy

How is a Pedicle Subtraction Osteotomy Performed?

If you need a PSO, your surgeon will position you face-down, on a slight incline. The incline exposes the back side of your spine, making posterior entrance easy.

Next, your surgeon will attach pedicle screws on either side of the osteotomy site. Then, the true aim of the procedure can begin. Your surgeon will remove or “subtract” your:

  • Spinous Process: The bony tips that jut out from the back of each vertebrae
  • Lamina: The bony casing that covers your spinal cord
  • Facet Joints: The bony hinge where two vertebrae meet
  • Pedicles: The band of bone that connects the vertebral body to the processes

All of this removal creates an open wedge on the back side of your spine. Adding rods to the pedicle screws, your surgeon will then close this hinge. A bone graft from the patient or a donor supply will be applied to the back side of your spine. This graft replaces the missing bone and works to fuse the gap together. In addition, if you have osteoporosis your doctor may use a special bone graft that contains a specific protein to reinforce your spine.

Do I Qualify for a Pedicle Subtraction Osteotomy?

You may need a PSO if you have:

  • Flatback Syndrome: If you have flatback syndrome from a failed back surgery
  • Kyphosis: If you have severe, rigid, or degenerative kyphosis (>75 degrees)
  • Scoliosis: If you have severe scoliosis (>75 degrees)
  • Ankylosing Spondylitis (AS): If sections of your spine have fused together from AS
    The above situations make an individual ideally suited for a PSO. However, if you are a smoker, have lordosis, or < 75 degrees of curvature, other options make work better for you.

To find out if you qualify for a PSO, contact the Lowenstein team. Dr. Jason Lowenstein uses advanced treatment options and minimally invasive techniques to ensure that you receive the right treatment, at the right time. For spinal deformity relief that you can count on, contact the Lowenstein team today!