Journal of Research in Medical Sciences1735-1995141200902236366ENNeuroscience research center,chamran hospital,neurosurgerydepartment, Shiraz university of medical sciences.Neuroscience research center,chamran hospital,neurosurgerydepartment, Shiraz university of medical sciences.200811052009011120081216<ul> <li>Avulsion or fracture of posterior ring apophysis of lumbar vertebra is an uncommon cause of radicular low back pain in pediatric age group, adolescents and athletes. This lesion is one of differential diagnosis of disc herniation. We reported two teenage boys with sever low back pain and sciatica during soccer play that ultimately treated with diagnosis of lipped vertebral apophysis.</li> <li><strong>KEY WORDS:</strong> Ring Apophysis, vertebral fracture, sciatica, low back pain, disc herniation.</li> </ul>http://jrms.mui.ac.ir/index.php/jrms/article/view/2580http://jrms.mui.ac.ir/index.php/jrms/article/download/2580/1237