Isthmic spondylolisthesis, or spondylolisthesis due to a lesion of the pars interarticularis ... which is rarely more than a grade I slip. Sagittal orientation of the facet joints and facet ...

Lumbar spondylolysis is a common cause of low back pain in adolescent athletes. It is a unilateral or bilateral defect of the pars interarticularis ... complete healing of the right and left pars ...

A 72 year-old man noted chronic low back pain, worse with standing and walking. With prolonged standing, he would develop pain and numbness radiating down the posterior thighs and calves. Lumbar ...

Sites of increased scintigraphic uptake in the posterior elements of the lumbar spine and complete or incomplete fracture in the pars interarticularis were compared for these two sports. Results: ...

Excessive extension or hinging from one segment of the lumbar vertebrae causes spondylolysis (making you a spondy), better known as stress fracture to the pars interarticularis. Spondylolysis is ...