title: [MAC-TL twin screw. A new thoracoscopic implantable stabilization system for treatment of vertebral fractures--implant design, implantation technique and in vitro testing].
abstract: Due to the lack of an appropriate instrumentation system for minimally invasive procedures to treat spinal fracture, a new thoracoscopically implantable stabilization system was developed. This report describes the new implant design and implantation technique. In a biomechanical in vitro study, an anterior corpectomy model representing the worst case of burst fracture instability was simulated, and the primary stability parameters of the new system were evaluated in comparison to a dorsal stabilization system. With the interbody graft and fixation, the new system demonstrated higher stabilizing effects in flexion/extension and lateral bending and restored axial stability beyond the intact spine and the dorsal stabilization system. Considering all the advantages of the endoscopic procedure and this biomechanical characterization, the clinical trial is warranted; its usefulness has been demonstrated in more than 150 cases in a multicenter study to date.
authors.affiliation: Abteilung für Unfall-, Hand- und Wiederherstellungschirurgie, Universität Ulm. Markus.Schultheiss@medizin.uni-ulm.de
authors.forename: M
authors.initials: M
authors.lastname: Schultheiss
authors.forename: H J
authors.initials: HJ
authors.lastname: Wilke
authors.forename: L
authors.initials: L
authors.lastname: Claes
authors.forename: L
authors.initials: L
authors.lastname: Kinzl
authors.forename: E
authors.initials: E
authors.lastname: Hartwig
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D001863:Bone Screws; D016025:Bone Transplantation / Q000295:instrumentation; D004867:Equipment Design; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D006801:Humans; D066298:In Vitro Techniques; D008159:Lumbar Vertebrae / Q000293:injuries* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D016103:Spinal Fractures / Q000601:surgery*; D013123:Spinal Fusion / Q000295:instrumentation*; D013906:Thoracoscopy
vernacular_title: MACS-TL-twin-screw. Ein neues thorakoskopisch implantierbares Stabilisationssystem zur Behandlung von Wirbelfrakturen--Implantatdesign, Implantationstechnik und In-vitro-Testung.