Turkish Neurosurgery 2009 , Vol 19 , Num 4
Utilizing Dynamic Rods with Dynamic Screws in the Surgical Treatment of Chronic Instability: A Prospective Clinical Study
Tuncay KANER1, Mehdi SASANI2, Tunc OKTENOGLU3, Murat COSAR4, Ali Fahir OZER5
1Pendik State Hospital, Neurosurgery Department, İstanbul, Turkey
2,3,5American Hospital, Neurosurgery Department, İstanbul, Turkey
4Çanakkale 18 March University, Faculty of Medicine, Neurosurgery Department, Çanakkale, Turkey
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 (α) 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, α and IVS parameters. One patient experienced a broken screw.

CONCLUSION: We obtained good clinical results by utilizing dynamic rods with dynamic transpedicular screws. Keywords : Dynamic stabilization, Lumbar spine, Surgical treatment, Dynamic rod, Dynamic screw

Corresponding author : Tuncay Kaner, tkaner2002@yahoo.com