The impact of lumbosacral transitional vertebrae on the distribution and healing of lumbar spondylolysis.

Purpose: Lumbosacral transitional vertebra (LSTV) are a common anatomical variant of the lumbosacral junction that has been associated with various spinal disorders. However, no prior studies have examined the relationship between LSTV and lumbar spondylolysis. Therefore, the aim of this study was to elucidate the prevalence of LSTV and assess its impact on the affected spinal level and bone union rate in patients with lumbar spondylolysis.