Lumbar Single-Level Dynamic Stabilization with Semi-Rigid and Full Dynamic Systems: A Retrospective Clinical and...

Area of Science:

• Orthopedic Surgery
• Spinal Fusion Alternatives
• Biomechanical Engineering

Background:

• Lumbar degenerative disc disease (DDD) is a common cause of low back pain.
• Dynamic stabilization systems offer a less rigid alternative to traditional spinal fusion.
• Comparing the efficacy of different dynamic stabilization systems is crucial for clinical decision-making.

Purpose of the Study:

• To compare the clinical and radiological outcomes of three commonly used posterior transpedicular dynamic stabilization systems for DDD.
• To evaluate the effectiveness and safety of Dynesys, dynamic screw with PEEK rod, and a full dynamic system (BalanC).

Main Methods:

• A cohort of 71 patients with single-level lumbar DDD received posterior transpedicular dynamic stabilization between 2011 and 2014.
• Three distinct dynamic systems were employed: Dynesys, dynamic screw with PEEK rod, and BalanC.
• Clinical and radiological data were collected preoperatively and at 6, 12, and 24 months post-surgery.

Main Results:

• All patients demonstrated significant improvements in clinical outcomes.
• No statistically significant differences were observed in radiological outcomes among the three dynamic stabilization systems.
• Minor complications included screw loosening (2 patients) and screw breakage (1 patient), both requiring revision surgery.

Conclusions:

• All three dynamic stabilization systems evaluated provide satisfactory outcomes for patients with lumbar degenerative disc disease.
• The choice of dynamic stabilization system did not significantly impact radiological results.
• While effective, potential complications such as screw loosening or breakage should be considered.