Joshua P Herzog1, Nicholas J Zarkadis2, Gautham Prabhakar3, Nicholas A Kusnezov2. 1. Orthopaedic Spine Center, Massachusetts General Hospital, Boston, MA, United States. 2. Department of Orthopaedic Surgery and Rehabilitation, William Beaumont Army Medical Center, El Paso, TX, United States. 3. Paul L. Foster School of Medicine at Texas Tech University Health Sciences Center El Paso, El Paso, TX, United States.
Abstract
BACKGROUND: Compare the biomechanical stability of a novel "U" posterior cervical fixation construct to four other posterior cervical atlantoaxial fixation constructs. METHODS: Eight fresh frozen human cadaver spines were tested after a simulated odontoid fracture, and following stabilization with each construct. RESULTS: All constructs significantly decreased flexion-extension and axial rotation compared to the destabilized spine. The U construct provided significantly more axial stability than the Brooks wire technique. CONCLUSION: The novel U construct demonstrated comparable biomechanical stability to the existing constructs in all three planes of motion with the exception of axial rotation, in which it was inferior to TAS.
BACKGROUND: Compare the biomechanical stability of a novel "U" posterior cervical fixation construct to four other posterior cervical atlantoaxial fixation constructs. METHODS: Eight fresh frozen human cadaver spines were tested after a simulated odontoid fracture, and following stabilization with each construct. RESULTS: All constructs significantly decreased flexion-extension and axial rotation compared to the destabilized spine. The U construct provided significantly more axial stability than the Brooks wire technique. CONCLUSION: The novel U construct demonstrated comparable biomechanical stability to the existing constructs in all three planes of motion with the exception of axial rotation, in which it was inferior to TAS.
Authors: Bradford L Currier; Tim P Maus; Jason C Eck; Dirk R Larson; Michael J Yaszemski Journal: Spine (Phila Pa 1976) Date: 2008-03-15 Impact factor: 3.468