Minimally Invasive Spinal Surgery Including Percutaneous Pedicle Screws web based movie
The spine is made up of small bony segments called vertebrae. Vertebrae are categorized into cervical or neck vertebrae, thoracic (upper back), lumbar (lower back) and sacrum. This stack of bones is protected by the cushioning effects of intervertebral discs. A cylindrical bundle of nerve fibres called the spinal cord passes through the entire vertebral column and branches out to the various parts of our body to provide voluntary movement and sensation.
The spine consists of the lamina which forms the roof and back of the spinal canal, and the pedicle which joins the lamina to the vertebral body to form the vertebral arch.
Aging and trauma can damage the intervertebral discs, causing the bones to painfully rub against each other and compress the nerves that pass through them. Your doctor may recommend a spinal fusion procedure, where the diseased bones are fused and supported with screws through a minimally invasive surgery called pedicle screw instrumentation.
Minimally invasive pedicle screw instrumentation is a procedure performed along with another procedure called spinal fusion. Conditions such as degenerative disc disease, scoliosis, spondylolisthesis, spinal instability, and fractures can be treated through this procedure.
Spinal fusion is a procedure during which your doctor fuses your diseased vertebrae together thereby preventing motion at that vertebral segment.
Pedicle screws used during a spinal fusion surgery provide a means for gripping onto a vertebral segment and limiting its motion. The instrumentation also provides additional support and stability while the bones are fusing together.
During minimally invasive pedicle screw instrumentation, you will be given general anaesthesia, which means you will sleep throughout the entire procedure. You will lie on your stomach during the surgery. The skin on your back will be cleansed with antibiotic solution. Your surgeon will use live action X-ray, known as fluoroscopy, throughout the procedure to locate your diseased vertebral segments and precisely guide the instruments. Appropriate surgical markings will be made on your back. Your surgeon will then introduce metal tubes through tiny skin incisions directly over the pedicles without retracting the muscles off the vertebral bones. This allows for less damage to the back muscles. Puncture holes will then be made through the metal tubes onto the pedicles and pedicle screws are inserted into the respective pedicles. The screws act as firm anchor points and your surgeon will then tunnel a rod through the screws. The rod connects the screws and prevents motion of the vertebral segments resulting in a stable spine fixation.
Minimally invasive pedicle screw instrumentation has the following advantages over traditional open surgery:
Minimally invasive pedicle screw instrumentation is a relatively safe procedure and complications occur infrequently. Some of the potential complications include:
Minimally invasive pedicle screw instrumentation provides excellent stability to the spine following spinal fusion enabling patients a faster recovery process with early mobilization when compared to traditional open surgery.