The high coincidence of spondylolysis in spines with SBO may not be due to the mechanical factors. ... The range of motion at L4/5 and L5/S1 were also calculated.

I have been diagnosed after x-rays with "bilateral spondylolysis at L5 resulting in Grade 1 polisthesis of L5 in relation to S1. Mild facet hypertrophy at L5/S1.On referring back to my GP, he informed ...

Isthmic Spondylolisthesis and Spondylolysis Steven M. Theiss, MD, Birmingham, Ala, from the Division of Orthopedic Surgery, University of Alabama at Birmingham. J South Orthop Assoc. 2001;10(3) ...

The L5 and occasionally the L4 vertebrae are usually involved. 3, 8 Although spondylolysis has been reported to be more common in male than female patients, progression is more likely in female ...