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 ...

There appeared to be a moderate degree spondylosis at level of L4-L5 and moderate degree of spondylosis at the level of L5-S1 with disc protrusion at the level of L4-L5. The intervertebral disc height ...

The L5 and S1 nerve roots are involved in approximately 95 percent of lumbar-disk herniations. 12,13 ...

Radiographic findings predisposing to progression are dysplastic spondylolisthesis, slips more than 50%, high slip angle, and changes at L5-S1 consisting of a vertical sacrum, a low lumbar index ...

Finite element model of L3-S1 lumbar spine with spina bifida occulta at L5. Note the separation of the spinous process at L5 simulating the SBO ...

Lumbar spondylolysis is a common cause of low back pain in adolescent athletes. It is a unilateral or bilateral defect of the pars interarticularis. The cause is still a matter of debate. A wide range ...

Spondylolisthesis is a slipping of vertebra that occurs, in most cases, at the base of the spine. Learn more about the condition and treatment options.

This is calculated by first constructing a line perpendicular to the posterior vertebral bodies of S1 and S2. The angle between this line and a line parallel with the superior endplate of L5 is ...