Advancement in Spinal Surgery: Latest Development

Introduction:

The spine, or the backbone of the human body, is one of the most essential structures of the human body. The spine comprises bony components like vertebrae and a neural component known as the spinal cord. Due to both of these components, the spine provides structural support for the body and neural sensations in various parts of the body. Any disorder may hamper the proper functions of the body. Spinal surgeries are indicated to cure spinal complications. However, in recent times, several advancements in spinal surgeries have been made to produce better clinical outcomes.

What Are the Needs of Spinal Surgery?

Spine surgeries are done to correct various spinal abnormalities and spinal diseases.

Spinal surgery is indicated in the following conditions,

1. Herniated or ruptured discs are injured due to the destruction of protective disks between the spine's bones.

2. Spinal stenosis causes the narrowing of the spinal column, leading to pressure on the spinal cord and nerves.

3. Spondylolisthesis or displacement of one or more bones in the spine.

4. Vertebral fractures can be caused by injury or osteoporosis affecting the bones in the spine.

5. Degenerative disk disease is the deterioration of spinal disks as an individual ages.

Several types of spinal surgeries can be done to cure different spinal abnormalities.

These are,

1. Vertebroplasty and Kyphoplasty: These procedures treat compression fractures of the vertebrae resulting from osteoporosis. In these procedures, bone cement with glue-like properties is injected inside the bone to reinforce and solidify the bone.

2. Spinal Laminectomy or Spinal Decompression: This is done to treat spinal stenosis. The surgeon excises the bony structures of the vertebrae and any bone spurs, intending to enlarge the spinal column to alleviate pressure on the nerves.

3. Foraminotomy: This procedure reduces discomfort caused by spinal cord compression. The surgeon removes bone from the sides of the vertebrae to expand the area through which the nerves pass. This increased space can reduce nerve compression and alleviate the pain.

4. Discectomy: This surgical procedure is done to remove a disc that has herniated and is exerting pressure on the spinal cord. Laminectomy and discectomy are commonly performed together.

In recent times, several advancements in spinal surgery have been made by several researchers. These advancements include minimally invasive techniques, modern methods for diagnosis, and newer materials.

What Are the Advanced Technologies Used in Spinal Surgery?

Several modern technologies are being used nowadays in spinal surgeries. These technologies are;

1. Endoscopy: Endoscopy is a procedure in which a camera-like device is inserted into the body with the help of a flexible tube-like structure. This helps in the visualization of the organs from the inside. Also, other structures can be attached to it for different diagnostic and surgical purposes. In spinal surgery, endoscopy helps in better visualization with minimal accessibility.

2. Robotics: The utilization of robotic spinal systems in spine surgery is on the rise, primarily due to their capacity to perform procedures with enhanced accuracy, reliability, and efficiency. These robotic technologies offer superior precision in the fixation of pedicle screws and result in reduced soft tissue damage compared to traditional methods when integrated with navigation systems.

3. Augmented Reality and Artificial Intelligence: Augmented reality is one of the newest additions to the field of spinal anesthesia. This helps in the three-dimensional reconstruction of the spinal cord. Also, with the help of artificial intelligence and virtual reality devices better visualization along with pre and post-operative planning can be possible.

What Are the Minimally Invasive Techniques in Spinal Surgery?

The function of the minimally invasive techniques in spinal surgery is to reduce the surgical complications. Also, such techniques are beneficial for less tissue damage and faster healing. The minimally invasive techniques used in modern-day spinal surgery are;

1. Lumbar Posterior Decompression: This is a decompression or discectomy procedure where the posterior route is used for treating conditions like lumbar spinal stenosis, lumbar disk herniation, or spine metastasis. The lumbar posterior approach in minimally invasive procedures utilizes two main techniques with an endoscope: the interlaminar approach for treating spinal stenosis on both sides and the transforaminal approach for treating foraminal stenosis. Choosing the right method based on the location and direction of disk herniation can help reduce surgical complexity. It is crucial to accurately evaluate the patient's condition before proceeding with surgery to establish an effective surgical strategy.

2. Lumbar Interbody Fusion: This procedure is done when lumbar posterior decompression fails. The transforaminal lumbar interbody fusion (TLIF) approach is used for minimal access spinal surgeries. Due to the gentle angle of insertion of the interbody cage in comparison to the coronal orientation of the human body, this method enables the insertion of a larger cage. TLIF can be carried out using a minimally invasive approach with the assistance of a microscope and a tubular retractor or an endoscope, allowing for greater precision and reduced tissue disruption.

What Are the Advanced Materials Used in Spinal Surgery?

The newer materials used in spinal surgery are helpful for better surgical outcomes. These materials are used for bone implantation, which helps with better bone regeneration, healing, and alignment.

These materials are,

1. Hydroxyapatite: Hydroxyapatite (HA) is a phosphate mineral that can be applied to an implant to enhance bony integration. HA-coated pedicle screws exhibit higher pullout force and bone-to-implant contact compared to uncoated screws. This material is commonly recommended for patients with reduced bone mineral density because of these characteristics. Research indicates that HA procedures result in shorter operative times and less blood loss than those using autogenous bone grafts, with no discernible variance in outcomes or complications.

2. rhBMP2: rhBMP2 is a good alternative to using an iliac crest bone graft (ICBG) to minimize the risk of donor site morbidity and reduce the occurrence of wound-related complications associated with autograft harvest. Additionally, rhBMP2 has been shown to have higher rates of spinal fusion compared to ICBG, local autograft, and allograft.

3. Bioabsorbable Materials: Bioactive glass, a gel material with a semi-crystalline structure, possesses antimicrobial and osteoinductive characteristics. Like silicon nitride, the body can dissolve and absorb it. The residual ions contribute to hydroxyapatite formation by depositing calcium and phosphorus. Tricalcium phosphate (TCP) is an alternative osteoinductive ceramic bone graft substitute.

Conclusion:

Spinal problems are responsible for functional disabilities. Advancements in spinal fusion surgeries can provide rapid relief from spinal problems. Several advancements are being made in spinal surgery today. Technologies like endoscopy, robotics, and augmented reality improve visualization and treatment outcomes. Different newer materials can also help with wound healing and bone formation.