Fig. 6From: Reducing the extent of facetectomy may decrease morbidity in failed back surgery syndromevon Mises stress on the facet cartilage. Model1 The complete model. Model2 The model after one-quarter excision of the superior articular process. Model3 The model after one-half excision of the superior articular process. F. Flexion. E. Extension. L. Left lateral bending. R. Right lateral bending. A. Axial rotationBack to article page