[Advances in the study of anatomy and biomechanics of lumbosacral transitional vertebrae].

Lumbosacral transitional vertebrae (LSTV) is a common phenomena of developmental anomaly, which is characterized by anatomic variation and biomechanical changes. LSTV is often accompanied with low back pain, lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis and other spinal diseases. The diagnosis of LSTV has a great significance for proper treatment process. Early imageological studies have limitations on distinguishing different types of LSTV from the aspect of morphological changes. This review focuses on recent studies of LSTV anatomy and variation, its influence in local biomechanics and spinal alignment, and its relationship with spinal diseases.腰骶部移行椎（LSTV）是较常见的一种发育异常，表现为解剖变异及生物力学的改变，常并发下腰痛、腰椎间盘突出、腰椎椎管狭窄、腰椎滑脱等多种脊柱疾病。LSTV的诊断对临床治疗方案的制订意义重大，早期影像学检查因其仅以形态学变化判断移行椎的类型，具有一定的局限性。本文主要从LSTV的解剖及变异、对局部力学和脊柱力线的改变及其与脊柱疾病的关系等方面进行综述。.