📌 Introduction
For many years, when a spinal disc became severely damaged and caused pain, herniations, or nerve compression, the most common surgical solution was spinal fusion. This procedure joins two vertebrae together to eliminate motion at that level and relieve pain. Although spinal fusion continues to be an excellent option in many cases, modern spine surgery is increasingly focused on something very important: preserving the spine’s natural movement.
This is where cervical and lumbar disc prostheses come into play.
🧠 What is a disc prosthesis?
A disc prosthesis is a device designed to replace a damaged spinal disc while maintaining the natural motion of the spine. Unlike fusion surgery, the prosthesis allows the vertebrae to continue moving in a controlled and physiologic manner.
These prostheses are mainly used in:
• Cervical spine (neck)
• Lumbar spine (lower back)
🔄 Why is motion preservation important?
The spine was designed to move. When one spinal segment no longer moves because of a fusion, the adjacent vertebrae may begin to work harder than normal. Over time, this can accelerate degeneration in nearby discs.
Motion preservation aims to:
• Maintain more natural spinal mobility
• Reduce stress on adjacent segments
• Lower the risk of future degeneration
• Promote faster functional recovery
• Improve overall quality of life
In carefully selected patients, outcomes can be excellent.
🧩 Cervical disc prostheses
Cervical disc prostheses are mainly used in patients with:
• Cervical disc herniations
• Neck pain associated with nerve compression
• Arm pain caused by cervical radiculopathy
• Selected cases of spinal cord compression
The goal is to remove the damaged disc and replace it with a mobile artificial disc.
✅ Potential benefits
- Preservation of neck motion
- Less stiffness
- Faster recovery
- Reduced degeneration at adjacent levels
- Excellent relief of radicular pain
Today, cervical disc replacement represents an excellent alternative for young or active patients who meet the appropriate criteria.
🦴 Lumbar disc prostheses
Lumbar disc replacement is technically more complex and requires even more careful patient selection.
It may be considered in patients with:
• Discogenic low back pain
• Localized disc degeneration
• Younger patients with good spinal stability
📈 Potential benefits
- Preservation of lumbar motion
- Reduced stiffness
- Improved functionality
- Less overload on adjacent segments
However, not every patient is a candidate.
⚠️ The most important factor: choosing the right patient
This is the true key to success.
Not every patient with spinal pain requires a prosthesis. In fact, one of the most important mistakes in spine surgery is implanting a disc prosthesis in a patient who is not an ideal candidate.
Proper selection requires evaluating factors such as:
• Age
• Bone quality
• Condition of the facet joints
• Degree of degeneration
• Spinal stability
• Type of pain
• MRI and dynamic X-ray findings
• Physical activity and lifestyle
There are patients for whom fusion surgery remains the best option, while others may achieve superior functional outcomes with motion-preserving technology.
🧬 Modern spine surgery is becoming increasingly personalized
Today, the worldwide trend in spine surgery is no longer performing the same procedure for every patient, but rather individualizing treatment according to each specific case.
The goal is simple:
• relieve pain,
• protect the nervous system,
• and preserve as much function and movement as possible.
Technology has advanced tremendously, but the true success of spine surgery still depends on proper medical evaluation, surgical expertise, and careful patient selection.
— Dr. Alejandro Ernesto Méndez Farías
Neurosurgery and Spine Surgery
Referencias bibliográficas
- Owusu-Sarpong S, et al. Cervical disk arthroplasty: The new gold standard? 2025. PMC.
- Zhang Y, et al. Comparison of cervical disc arthroplasty versus anterior cervical discectomy and fusion for single-segment cervical degenerative disc disease: systematic review and meta-analysis. 2025.
- Chen CM, et al. Cervical Disc Arthroplasty versus ACDF in two-level cervical degenerative disease. Journal of Clinical Medicine. 2024.
- Kotheeranurak V, et al. Clinical and Radiographic Outcomes of Cervical Disc Replacement as Motion Preservation Surgery. Neurospine. 2024.
- International Journal of Spine Surgery. Cervical Disc Arthroplasty: Rationale, Designs, and Results of Current Prostheses. 2024.
- Bhatia N, et al. 20-year outcomes following single-level cervical disc arthroplasty versus ACDF. Journal of Bone and Joint Surgery. 2024.
- Evolent Clinical Guidelines. Lumbar Total Disc Arthroplasty Guidelines. 2025.
- Carelon Medical Benefits Management. Spine Surgery Guidelines for Cervical and Lumbar Arthroplasty. 2024–2025.
- Ragab AM, et al. Hybrid surgery and motion preservation techniques in cervical degenerative disease. 2025.
- United Healthcare Clinical Policy. Total Artificial Disc Replacement for the Spine. 2026.