Adjacent segment disease following Dynesys stabilization for lumbar disorders: A case series of mid- and long-term follow-ups

Figure 1 Magnetic resonance images of patients. Arrow points at the adjacent level.

Figure 2 Kaplan-Meier survival analysis of cumulative reoperation risk. A total of 54 patients were followed-up for more than 10 years.

Figure 3 Probability of reoperation for upper adjacent segments with different modified Pfirrmann and University of California-Los Angeles grades. No significant difference was observed between adjacent degenerative grades.

Figure 4 Survival analysis for the number of Dynesys-instrumented levels. Survival analysis revealed no significant difference in the number of instrumented levels.

Figure 5 Survival analysis for a body mass index cutoff of 25 kg/m². No significant difference was observed between body mass index > 25 kg/m² and body mass index < 25 kg/m². BMI: Body mass index.