Aims: __ampersandsignbull; To study the occurrence and type of sacralisation of fifth lumbar vertebra __ampersandsignbull; To correlate embryological basis of the various types of anomalies in the Lumbosacral vertebrae Methodology: 98 adult human sacra were examined in the department of Anatomy of Seth GSMC, Mumbai. Damaged, mutilated and deformed sacra were excluded from the study. The data were collected by naked eye examination, compiled and statistically analysed and compared with other similar studies. Results: The sacralisation of the fifth lumbar vertebra and lumbarisation of first sacral vertebra was respectively seen in 18 out of the 98 sacra studied. This is in close relation with the observations from other studies on Indian population. Conclusions: Genetic factors play an important role in the embryogenesis of lumbosacral Transitional Vertebrae (LSTV). It is important for the clinicians and surgeons to have knowledge of the existence and incidence of LSTVs while performing various clinical and surgical procedures