At each level in the spine, there is a disc space in the front and paired facet joints in the back. Working together, these structures define a motion segment and permit multiple degrees of motion. Two vertebral segments need to be fused together to stop the motion at one segment, so that an L4-L5 (lumbar segment 4 and lumbar segment spinal fusion is actually a one-level spinal fusion. During spine fusion surgery, your doctor will attempt to stimulate bone growth between the vertebrae.
Once new bone forms, the vertebrae will be linked together, and there should be no further movement between the fused segments. Spinal degeneration leading to spinal stenosis is increasingly common in an aging population. Many patients are not referred for operation because of the fear of severe complications.
The purpose of this study was to relate the surgical risks involved in elective spinal decompression in elderly patients to those of total hip arthroplasty, a well-accepted procedure whose risks and benefits are well known.
There are three techniques that can be used during spinal decompression surgery:
laminectomy where an arch of bone, known as the lamina, is removed from one of your vertebrae
discectomy where a section of a damaged disc is removed
spinal fusion where two or more vertebrae are joined together with a bone graft
Pressure on a nerve root in the lower spine, often called nerve root compression, causes back and leg pain. In this operation the surgeon reaches the lumbar spine through a small incision in the lower back. After the muscles of the spine are spread, a portion of the lamina is removed to expose the compressed nerve root(s).
Pressure is relieved by removal of the source of compression part of the herniated disc, a disc fragment, a tumor, or a rough protrusion of bone, called a bone spur.
Thoracic Surgery benefit
No cutting of muscles
No cutting of the ribs or breastbone
Minimal scarring , better cosmetics
Minimal blood loss
Shorter hospital stay
Comparable cure rates for cancer
Quicker recovery and faster return to normal activities and work
Lumbar spinal Lumbar spinal fusion involves using a bone graft to stop the motion at a painful vertebral segment, which in turn should decrease pain generated from the joint. Spine surgery instrumentation (medical devices), bone graft procedures, and the bone stimulator are sometimes used along with spinal fusion surgery.