INTRODUCTION
Bertolotti's syndrome (BS) describes the relationship between low back pain (LBP) and lumbosacral transitional vertebra (LSTV). It's a factor that's sometimes overlooked when it comes to evaluating and treating lower back pain. The LSTV is categorised into several anatomic positions and types. Because of the different diagnostic modalities and criteria used in the research, the LSTV incidence in the general population varies greatly, and hence the link between LSTV and LBP remains contentious.
It has been suggested that the source of low back pain could be caused by disruption of biomechanics of the lowest vertebral segment of the lumbar spine produced by a unilateral aberrant articulation. Moreover, it has been proposed that biomechanical stress applied to the upper mobile vertebral segment can hasten early disc degeneration at nearby levels, resulting in disc protrusion or extrusion, which leads to back pain and sciatic pain.

AIM OF THE WORK
This work aimed to assess the incidence of Bertolotti's syndrome among laminectomy, foraminectomy, micronucleotomy and PLIF patients.