[Histological investigation of the ligamentum flavum]

The micro- and ultrastructures of the human ligamentum flavum were investigated. It was found that the ligamentum flavum is made of chiefly of elastic fibers. This kind of structure provides a basis for the important physiological functions of the ligamentum flavum. So the load is transmitted between the vertebrae and spinal stability is maintained by means of this ligament. Then clinical relevance was discussed.