This Item includes 2,900 files with the individual facet joint surfaces from 29 lumbar spines from L1 to S1 levels. Each specimen has four files per level: the superior and inferior surfaces for each side of the joint.
UPDATE Version 2: The files for 1312011 FLEX position have been corrected. In Version 1 those were incorrect files.
Additionally, these surfaces were captured at one of five spine positions: neutral, flexion, extension, right lateral bending, right axial rotation.