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Bertolotti’s Syndrome: An Underdiagnosed Cause for Lower Back Pain in Young Adults

Bertolotti’s syndrome (BS) is characterized by a fifth lumbar (L5) vertebra anatomic variation with a large transverse process that forms a pseudoarthrosis or a bony fusion with the sacral basis or iliac crest. This congenital variation can cause low back pain especially in young patients, but it is always a factor that is not addressed in the evaluation and treatment of lower back pain. The purpose of this study was to assess the etiology of low back pain and to determinate the incrimination of BS in chronic low back pain.