Spondylolisthesis

Pars Defects – Spondylolysis

History: young adult male with back pain.  This is a case of a pars interartcularis defect with anterolisthesis, also called spondylolysis with spondylolisthesis. These injuries are thought to be due to chronic repetitive stress at the pars interarticularis, and most commonly occur at the L5-S1 level. It is best demonstrated on oblique radiographs of the … Continue reading →