system
Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: BACKGROUND, METHODS, RESULTS. Meshes: Aged, Bone Screws, Cervical Vertebrae, Female, Fracture Fixation, Internal, Humans, Internal Fixators, Male, Middle Aged, Neoplasms, Osteolysis, Thoracic Vertebrae.
user
Does a new dorsal modular fixation device allow a modified approach in cervical and cervico-thoracic neoplastic lesions? Context: The aim of this study was to improve the management of cervical tumor osteolysis. A new modular rod-screw implant system for the posterior instrumentation of the occipito-cervical, cervical and cervico-thoracic spine (neon occipito cervical system, Ulrich, Germany) is available since 2000. K-wire guided pedicle screws are used, CT-guided instrumentation is possible. Previous studies have demonstrated increased biomechanical stability compared to established posterior cervical systems. The cervical and cervico-thoracic spine of 8 patients (6 males, 2 females, mean age 62 years, range 48-77 years) with osteolysis due to plasmocytoma (n=2), bronchial (n=2), mammary (n=2), esophageal (n=1) and pancreatic (n=1) carcinoma were instrumentated since June 2001. A stable fixation without loosening or failure of the fixation system was achieved in all cases. No impairment of the neurogical status was observed.
assistant
Posterior instrumentation of the cervical spine including the occipito-cervical and the cervico-thoracic region with a new modular angle-stable rod-screw implant system offers good stabilization and allows simultaneous decompression. Since tumor masses are predominantly located in the anterior portion of the spine blood loss can be reduced. Final Decision: yes