Motion-Preservation in Spinal Surgery
SERVICES
Nerve decompression in the spine is often all you need without any instrumentation fusion or disk replacement. Some examples of these procedures are:
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Microdiscectomies
A microdiscectomy is a minimally invasive spine surgery performed to relieve severe, radiating leg pain (sciatica) caused by a herniated disc pinching a spinal nerve root. Utilizing a high-powered operating microscope, Dr. Lochhead can precisely view and access the spine through a very small incision while gently separating the lower back muscles rather than cutting them. Once the compressed nerve root is safely protected, Dr. Lochhead removes only the specific herniated tissue fragment responsible for the pressure, leaving the rest of the healthy disc intact. Because this precise approach minimizes tissue damage, it is typically performed as an outpatient procedure with same-day recovery, offering immediate relief from sharp nerve pain while allowing patients to return home quickly to continue healing.
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Lumbar Laminectomies
A lumbar laminectomy is a specialized decompression spine surgery performed to relieve pressure on the spinal cord or compressed nerve roots in the lower back. The procedure involves making a small incision in the lower back, gently moving the supporting muscles aside, and removing part or all of the lamina (the bony roof arching over the backside of the vertebra). By clearing away this bone, along with any contributing bone spurs or herniated disc material, the surgery creates vital space within the spinal canal to alleviate nerve irritation caused by conditions like lumbar spinal stenosis, degenerative disc disease, and severe sciatica. Utilizing advanced, minimally invasive techniques, this precise approach minimizes tissue disruption to provide rapid relief from radiating leg pain, numbness, and weakness, ultimately restoring mobility and improving daily function for patients who have not found success with conservative treatments.
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Posterior Cervical Foraminotomy
A posterior cervical foraminotomy is a surgical procedure performed through the back of the neck to relieve localized neck stiffness and radiating arm pain, numbness, or weakness caused by a pinched spinal nerve. When conditions like herniated discs, bone spurs, or thickened ligaments narrow the neural foramen—the protective bony pathways where nerve roots exit the spinal cord—this procedure is utilized to widen those passages and create more space. During the surgery, the Dr. Lochhead accesses the spine through a small incision on the symptomatic side of the neck, gently separating the surrounding muscles with a retractor rather than cutting them. Dr. Lochhead then precisely removes the compressing bone or disc tissue to achieve decompression before returning the muscles to their natural position. Often performed using advanced, minimally invasive techniques to drastically reduce tissue disruption.
Cervical Disc Replacement vs. Cervical Fusion
CERVICAL FUSION
Cervical fusion, often called anterior cervical discectomy and fusion (ACDF), is a surgical approach where a damaged disc in the neck is removed, and then the two vertebrae above and below the disc are permanently joined together. A bone graft (from the patient’s own body or donor/synthetic material) is placed into the space where the disc was, and often a small metal plate with screws is applied to hold the vertebrae stable while the bone fuses into one solid bone over time. The result is a rigid, stable spinal segment that no longer moves at that level.
This fusion removes pressure on nerves and the spine caused by the damaged disc — which helps relieve pain, numbness, and nerve symptoms. But because the vertebrae are now rigid, motion at that level is lost permanently.
Cervical Disc Replacement
Cervical disc replacement (also called cervical disc arthroplasty) takes a different approach: instead of fusing vertebrae, the surgeon removes the damaged disc and inserts an artificial disc designed to mimic the natural disc’s structure and function. The artificial disc acts like a joint, restoring mobility between the vertebrae rather than eliminating it entirely.
By preserving motion at that spinal level, disc replacement allows the neck to bend, turn, and flex more naturally — closer to how it behaved before the disc became damaged.
Why Dr. Lochhead Recommends cervical Disc Replacement Over cervical Fusion
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How Dr. Lochhead chooses
While Dr. Lochhead strongly advocates for Cervical Disc Replacement because it preserves natural motion and flexibility, it is not the right choice for every patient.
The deciding factor is the underlying stability of your spine. If your spine is stable, an artificial disc is often the ideal option to keep you moving naturally. However, if there is pre-existing spinal instability, a disc replacement could lead to future complications. In those cases, Dr. Lochhead recommends a Cervical Fusion to properly secure the spine and ensure long-term relief, preventing the need for a follow-up surgery just months later.
Every recommendation is highly personalized. Dr. Lochhead carefully determines the safest, most effective path forward for you by evaluating your advanced imaging (X-rays/MRIs), your age, and the precise stability of your cervical spine.
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Less stress on adjacent discs, lower long-term wear risk.
When a cervical level is fused, the loss of motion at that level can shift extra stress and mechanical load onto the discs above and below. Over time, this may accelerate degeneration of those adjacent discs (a phenomenon often called adjacent-segment disease). By preserving motion, disc replacement helps maintain more natural spinal mechanics, which can reduce the risk of adjacent-level degeneration.
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Faster recovery and return to activity
Because the body doesn’t need to fuse bones together, recovery after disc replacement is often quicker and less restrictive than fusion. Many patients return to light activities sooner, with fewer limitations during healing.
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Lower likelihood of needing additional surgery at the treated level
According to meta-analyses, disc replacement is associated with a lower rate of reoperation related to the original surgery compared to fusion, at least over the first several years.
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Preserves a more “natural” spinal experience over time
Because the artificial disc allows continued motion and reduces unnatural stress on other spinal segments, many patients enjoy better long-term comfort, mobility, and quality of life, more similar to a healthy spine prior to degeneration.
When a patient is a suitable candidate, disc replacement offers many of the pain-relief benefits of fusion, but with the added advantages of mobility, less long-term stress on the spine, quicker recovery, and a lower reoperation rate at the original level. For these reasons, Dr. Lochhead often favors disc replacement over fusion when clinically appropriate.
Minimally Invasive Microdiscectomy or Decompression vs. Spinal Fusion
Minimally Invasive Microdiscectomy or Decompression
When a lumbar disc becomes herniated or spinal structures compress nerves (for example causing leg pain or sciatica), a surgeon may treat the problem with a minimally invasive microdiscectomy or decompression. In this procedure, Dr. Lochhead makes a small incision (often with specialized tools and a microscope or tubular retractors), removes the portion of disc material or bone/spur that is pressing on nerves, and relieves nerve compression, but does not fuse the spine. The goal is to restore nerve function and reduce pain while preserving as much of the spine’s natural anatomy and motion as possible.
Because the surgery is “minimally invasive,” tissue disruption tends to be smaller, blood loss lower, and recovery faster compared to more extensive spine operations. Many patients can return to walking, normal activity, or even home quickly, often with less downtime.
Spinal Fusion
Spinal fusion, performed for more complex spinal conditions, involves removing the problematic disc (or decompressing the nerves), and then permanently joining (fusing) the vertebrae above and below the affected level using bone grafts, sometimes metal cages, screws, or rods. The idea is to eliminate motion at that spinal level, stabilize the spine, and prevent further degeneration or instability.
Fusion can provide structural stability, which may be important for certain diagnoses (e.g., spinal instability, deformity, or recurrent disc problems), but because the segment is fused, motion at that level is lost, and the spine’s natural biomechanics change.
Why Dr. Lochhead Often Recommends Microdiscectomy/ Decompression
OVER Spinal Fusion
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Preserves motion and natural spine mechanics
Because decompression alone does not lock vertebrae together, the spine retains its natural flexibility. This means the patient keeps more of their native range of motion, which can be particularly important for everyday function and quality of life.
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Faster recovery, less surgical trauma
Minimally invasive techniques generally lead to reduced tissue disruption, lower blood loss, shorter surgery times, and often shorter hospital stays — allowing many patients to return to normal activity sooner than with fusion.
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Lower risk of some complications and less “downside burden”
Fusion adds hardware, bone grafts, and demands that bone heal solidly, which can lead to complications like non-union (failure to fuse), hardware problems, and prolonged recovery. Decompression alone avoids those risks.
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Comparable functional outcomes for many patients
Recent studies, including those on patients with degenerative conditions like spinal stenosis or low-grade spinal slippage (spondylolisthesis), show that decompression alone (without fusion) can produce similar improvements in pain, disability, and overall function compared with decompression + fusion, at least over intermediate-term follow-up.
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Shorter hospital stay, lower costs (if no instability)
Because decompression alone is less invasive and less resource-intensive, patients often spend less time in the hospital and have lower overall treatment costs than with fusion — important considerations especially in otherwise stable spines.
When a patient’s spine is stable and the problem is primarily nerve compression (e.g. from a herniated disc or stenosis), minimally invasive microdiscectomy or decompression offers a way to relieve pain and neurologic symptoms without sacrificing spinal motion, with fewer risks and quicker recovery, and often with similarly good functional results as fusion, making it an attractive first-line surgical option.
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