To evaluate the diagnostic value of somatosensory evoked potentials (SEPs), produced by stimulation of the common peroneal nerve of the lumbar intervertebral disc herniation, 43 patients were examined. In addition, recordings of SEPs in patients with spondylolysis and spinal canal stenosis, and in healthy subjects, were also made for the purpose of comparison. In general, there was strong corre...

Lumbar spondylolysis, a well known cause of low back pain, usually affects the pars interarticularis of a lower lumbar vertebra and rarely involves the articular processes. We report a rare case of bilateral spondylolysis of inferior articular processes of L4 vertebra that caused spinal canal stenosis with a significant segmental instability at L4/5 and scoliosis. A 31-year-old male who had suf...

We describe a systematic approach to the ultrasound (US) examination of the antropyloric region in children. US is the modality of choice for the diagnosis of hypertrophic pyloric stenosis (HPS). The imaging features of the normal pylorus and the diagnostic findings in HPS are reviewed and illustrated in this pictorial essay. Common difficulties in performing the examination and tips to help ov...

Klippel-Feil Syndrome (KFS) is a complex, congenital condition, originally described by Maurice Klippel and Andre Feil in 1912.1 It is characterized by congenital fusion of two or more cervical vertebrae. Because of the abnormal fusion process and altered spinal biomechanics with undue motion at the non-fused cervical segment, adjacent to fused segments, such individuals are predisposed to abno...

Ossification of the posterior longitudinal ligament in the cervical region is generally regarded as a rare disease, though a Japanese series of 185 cases has been reported. The main symptoms arise from a myelopathy, the degree of which varies from moderate to severe, due to stenosis of the spinal canal. In order to clarify the relationship between the severity of symptoms and the cross-sectiona...