Complete Non-Fusion of Sacral Lamina - A Case Study

The sacrum is a triangular bone which is formed by the fusion of five vertebrae and forms the posterosuperior wall of the pelvic cavity. Developmentally it develops as a typical vertebra. The neural arches meet at the mid dorsal line to form the rudimentary spines. The medial sacral crest presents below a sacral hiatus which is arched and is produced by the failure of the lamina of the fifth sacral vertebra to meet in the median plane. If the laminae are not fused, then the sacral canal will be open. Clinicians need to be aware of such conditions as a number of neurological deficits can occur due to the above said condition.