RESUMEN
This paper aimed to report a rare case of fusion of 6th and 7th cervical vertebrae, called as block vertebrae. Block vertebrae was observed in the Department of Anatomy, SRM Dental College. The bodies of C6 and C7 were completely fused. Anterioposterior radiograph of the fused vertebrae bodies showed hypoplastic inter vertebral disc. Lateral radiograph showed partial fusion of articular processes on left but remain unfused at the right side. Congenital cervical vertebral fusion results due to non-segmentation of sclerotomes. It may be asymptomatic or may result in various clinical symptoms with limitation of neck movements. Knowledge about the variations in vertebrae especially in cervical region is essential for orthopedic surgeons, oral-maxillofacial surgeons and physical therapists for planning any surgeries involving the neck region.
RESUMEN
Background: The vertebral disorders are the ones which lead to disability and lot of health problems. Since the lumbar part of the vertebral column is the main weight bearing and weight transmitting region, if there is a defective development, the area for muscle attachment and the strong bony structure for the transmission of weight would be missing leading to instability at an early age. In the present case dry and processed fifth lumbar vertebra, of unknown sex which presented the features with absence of spinous process, laminae and the inferior articular processes on both sides which were obtained for teaching the medical undergraduate students in M.S.Ramaiah Medical College, Bangalore. There was absence of spinous process, laminae and the inferior articular processes of fifth lumbar vertebra leading to a wide spina bifida with absence of laminae, inferior articular processes on both sides and spinous process of fifth lumbar vertebra which could be a developmental anomaly.