Utilizing Dynamic Rods with Dynamic Screws in the Surgical Treatment of Chronic Instability: A Prospective Clinical Study

AIM: In this study, we examined the results of utilizing the agile posterior dynamic stabilization system with dynamic transpedicular screws in our patients. MATERIAL and METHODS: Posterior dynamic instrumentation with agile rods and dynamic transpedicular screws was employed in 15 (seven male and eight female) patients (mean age = 42, ranging from 30 to 53). The average follow-up duration was 19 months (ranging from 12 to 25). The primary purpose for the surgery was degenerative disc disease. For subjective evaluation, patients underwent a physical examination utilizing the Oswestry disability index (ODI) and visual analogue scale (VAS). Radiographic parameters, including the angle of lumbar lordosis (LL), angle of segmental lordosis ( cc) and intervertebral space (IVS), were also evaluated. Both subjective patient evaluations and radiographic parameters were assessed at the 3rd and 12th postoperative months. RESULTS: Significant postoperative improvements were observed in the ODI and VAS measurements (P<0.05). There were no significant differences in the LL, alpha and IVS parameters. One patient experienced a broken screw. CONCLUSION: We obtained good clinical results by utilizing dynamic rods with dynamic transpedicular screws.