Frequency of Occurrence and Radiological Study of Lumbosacral Transitional Vertebrance

We found fifty-two Lumbosacral Transitional Vertebrae in eleven hudred sixty-eight IVP (Intravenous Pyelography) X-ray films during recent two years. We classified thease into four groups according to Jinnaka and investigated the frequency of occurrence.Thype I was observed in 14 cases (1.20%), Type II in 17 cases (1.11%), Type III in 11 cases (0.94%), and Type IV in 14 cases (1.20%).