SIX DEGREE OF FREEDOM SPINE SIMULATOR print   |  home  |   close window  
 
( Mouseover images for enlargement )  
   

The centerpiece of the Orthopaedic Spinal Research Laboratory is the six degree of freedom (DOF) spine simulator, designed by mechanical engineer, Jeff Gordon, MS. and Bryan Cunningham, MSc.

Six Degree of Freedom in Biomechanical Testing Laboratory  
   

The six degree of freedom spine simulator can produce up to 64 Nm of flexion/extension, lateral bending, and/or axial rotation torques. Each of the three axes – X, Y and Z – is controlled independently to induce a torque profile, to lock, or to operate on bearings - allowing inherently coupled rotational spinal motions to occur unconstrained. Translations in all three axes – X, Y and Z – can be unconstrained or locked if required.

Schematic Illustration of Six Degree
of Freedom Spine Simulator
 
   

The simulator also allows application of a follower load to simulate body weight and trunk loads. Segmental motion tracking is performed using an optoelectronic system (Optotrak, Northern Digital) which can record rotations to within ±0.1 degree and translations to within ±0.1 mm . A fluoroscopic image intensifier can provide real-time images during testing.

 

Visit "Biomechanical Testing/Fluoroscopic Imaging" for additional information.

Spine Simulator  
   

 

Six Degree of Freedom Spine
Simulator in use with specimen
 
   
   
close window