The denticulate ligament: anatomical properties, functional and clinical significance

Acta neurochirurgica
Davut CeylanSafiye Çavdar

Abstract

It is widely believed that the main function of denticulate ligaments (DLs) is to stabilize the spinal cord within the vertebral canal. The aim of this study was to assess the anatomical and histological structure of the DLs and to document any regional differences. Five formalin-fixed adult cadavers were used. The DLs were exposed via the posterior approach, and detailed anatomy and histology of these structures were documented. The main findings were: (1) each DL is composed of a single narrow fibrous strip that extends from the craniovertebral junction to T12, and each also features 18-20 triangular extensions that attach to the dura at their apices; (2) the triangular extensions are smaller and more numerous at the cervical levels, and are larger and less numerous at the thoracic levels; (3) the apices of the extensions attach to the dura via fibrous bands at cervical levels (each band 3-5 mm long) and lower thoracic levels (21-26 mm long), whereas they attach directly to the dura at upper thoracic levels; (4) the narrow fibrous strip of the DL features longitudinally oriented collagen fibers, whereas the triangular extensions are composed of transverse and obliquely oriented collagen fibers. The collagen fibers are thicker...Continue Reading

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Citations

Jul 31, 2013·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Bora GürerMustafa K Başkaya
Apr 2, 2015·Neurosurgical Focus·Alejandro J LopezNader S Dahdaleh
Jul 1, 2017·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Batbayar KhuyagbaatarYoon Hyuk Kim
Mar 10, 2016·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Batbayar KhuyagbaatarYoon Hyuk Kim
Sep 13, 2018·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Jennifer L PierceFrancis H Shen
Dec 20, 2019·British Journal of Neurosurgery·Meriem AmaroucheSanjeev Bassi
Mar 21, 2020·Surgical and Radiologic Anatomy : SRA·Özlem ElvanMustafa Aktekin
Feb 6, 2021·AJNR. American Journal of Neuroradiology·M HuppA Curt
Feb 13, 2021·Neuron·Laurence D PictonAbdeljabbar El Manira

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