Journal of Spine

Goel VK

Publications

• Research Article
  A Biomechanical Finite Element Study of Subsidence and Migration Tendencies in Stand-Alone Fusion Procedures - Comparison of an In Situ Expandable Device with a Rigid Device
  Author(s): Kiapour A, Kiapour AM, Kodigudla M, Hill GM, Mishra S and Goel VKKiapour A, Kiapour AM, Kodigudla M, Hill GM, Mishra S and Goel VK
  
  Abstract Study Design: Biomechanical study using a finite element model of the lumbar functional spinal unit (FSU). Objectives: To compare the biomechanics of a novel in situ expandable posterior lumbar interbody fusion (PLIF) device, with a traditional rigid cage used in a stand-alone fashion. Methods: An experimentally validated intact finite element (FE) model of the L4-L5 FSU was altered to model expandable VariLift-L and BAK devices in a stand-alone fashion. A follower compressive pre-load of 400 N plus 8.0 Nm of flexion, extension, lateral bending, and axial rotation moments were applied to the model to simulate the physiological loadings. The kinematics and load sharing among various models were compared. Results: Range of motion analyses showed that fusion utilizing VariLift-L expandable stand-alone device was more effective in limiting motion of the spinal column than the BAK.. Read More»
  DOI: 10.4172/2165-7939.1000120

  Abstract PDF