Isthmic spondylolisthesis, or spondylolisthesis due to a lesion of the pars interarticularis, is a common source of pain and disability in both the pediatric and adult population. This review ...

Isthmic spondylolysis is found in about 4–6% of the population The vast majority of radiographically evident pars defects develop during early childhood without symptoms Spondylolysis occurs more ...

Saifuddin et al [9] evaluated 69 pars defects and found that only about one third of the defects were oriented in a plane that could be reliably visualized on oblique radiographs.Yet, when ...