Lumbar single-level dynamic stabilization with semi-rigid and full dynamic systems: A retrospective clinical and radiological analysis of 71 patients

Ozer A. F., Oktenoglu T., Egemen E., Sasani M., Yilmaz A., Erbulut D. U., ...More

CiOS Clinics in Orthopedic Surgery, vol.9, no.3, pp.310-316, 2017 (Scopus) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 3
  • Publication Date: 2017
  • Doi Number: 10.4055/cios.2017.9.3.310
  • Journal Name: CiOS Clinics in Orthopedic Surgery
  • Journal Indexes: Scopus
  • Page Numbers: pp.310-316
  • Keywords: Disc degeneration, Instrumentation, Pedicle screw
  • Istanbul Medipol University Affiliated: Yes


Background: This study compares the clinical and radiological results of three most commonly used dynamic stabilization systems in the field of orthopedic surgery. Methods: A total of 71 patients underwent single-level posterior transpedicular dynamic stabilization between 2011 and 2014 due to lumbar degenerative disc disease. Three different dynamic systems used include: (1) the Dynesys system; (2) a dynamic screw with a PEEK rod; and (3) a full dynamic system (a dynamic screw with a dynamic rod; BalanC). The mean patient age was 45.8 years. The mean follow-up was 29.7 months. Clinical and radiological data were obtained for each patient preoperatively and at 6, 12, and 24 months of follow-up. Results: Clinical outcomes were significantly improved in all patients. There were no significant differences in the radiological outcomes among the groups divided according to the system used. Screw loosening was detected in 2 patients, and 1 patient developed screw breakage. All patients with screw loosening or breakage underwent revision surgery. Conclusions: Each procedure offered satisfactory outcome regardless of which system was applied.