The denticulate ligament: anatomical properties, functional and clinical significance

Ceylan, Davut; Tatarlı, Necati; Abdullaev, Tuychiboy; Şeker, Aşkın; Yildiz, Sercan Dogukan; Keleş, Evren; Konya, Deniz; Bayri, Yaşar; Kılıç, Türker; Çavdar, Safiye

doi:10.1007/s00701-012-1361-x

“…Similarly, a midline dorsal septum is present. Each of these three structures merges with the inner aspect of the dura mater and helps anchor the cord (7,8).…”

Section: Teaching Pointsmentioning

confidence: 99%

Spinal Hematomas: What a Radiologist Needs to Know

Pierce

¹

,

Donahue

²

,

Nacey

³

et al. 2018

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Spinal hematomas are a frequent indication for radiologic evaluation and can be a diagnostic dilemma for many radiologists and surgeons. There are four types of spinal hematomas: epidural, subdural, subarachnoid, and intramedullary (spinal cord) hematomas. Because they differ by their location in relationship to the meningeal membranes and spinal cord, unique radiologic appearances can be recognized to distinguish these types of spinal hemorrhage. Anatomic knowledge of the spinal compartments is essential to the radiologist for confident imaging diagnosis of spinal hematomas and to specify correct locations. MRI is the modality of choice to diagnose the location of the hematoma, characterize important features such as age of the hemorrhage, and detect associated injury or disease. Each type of spinal hematoma has imaging patterns and characteristics that distinguish it from the others, as these specific spinal compartments displace and affect the adjacent anatomic structures. Early detection and accurate localization of spinal hematomas is critical for the surgeon to address the proper treatment and surgical decompression, when necessary, as neurologic deficits may otherwise become permanent. Online supplemental material is available for this article. RSNA, 2018.

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“…Anatomy textbooks mention that the last DL is located at the T12-L1 level (Hollinshead, 1982;Williams and Newell, 2005). Also, Ceylan et al (2012) reported that no DL was found at the lumbar segment in their study. In our study, the most caudal DL was found to be located in the L1-2 level (31.2%) or most commonly in the T12-L1 level (68.8%).…”

Section: Discussionmentioning

confidence: 75%

“…Previous studies as well as anatomical textbooks mentioned that all DLs were triangular in shape (Teng, ; Epstein, ; Nicholas and Weller, ; McCormick and Stein, ; Williams and Newell, ; Ceylan et al, ). In contrary, our study shows that in the cervical segment all DLs were triangular in shape; but as soon as thoracic segment begins DLs changed their shape to “Y.”…”

Section: Discussionmentioning

confidence: 99%

Microsurgical anatomy of the denticulate ligaments and their relationship with the axilla of the spinal nerve roots

Gürer

¹

,

Canbay

²

,

Bozkurt

³

et al. 2013

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The denticulate ligaments (DL), 20 or 21 pairs of meningeal extensions, spread from the lateral aspect of the spinal cord to the internal aspect of the spinal dura mater. The aim of this study is to define the specific relationship of the DL with adjacent axilla of the spinal nerve roots and to investigate the anatomical features of the DLs and their variations. The topographical anatomy of the DLs and their relationships with the adjacent axilla of the spinal nerve roots was examined on 16 formalin-fixed adult cadaveric spinal cords. The distances from the dural attachment of the DL to the axilla of the superior and inferior spinal nerve roots were measured bilaterally at every spinal level. Also the distances from the dural attachment of the DL to the lateral aspect of the spinal cord were measured bilaterally. Cervical DLs showed a triangular shape, while in the thoracic segment the ligament changes the shape to "Y." Also the most caudal DL was identified to be at the L1-2 level. Our study revealed that the distances from the dural attachment of the DL to the superior and inferior spinal nerve root axilla were different at the cervical, upper thoracic and the lower thoracic segments. Both distances to the superior and inferior spinal nerve root axilla were shown to increase from cervical to lower thoracic segments. This study provides a detailed anatomy of the DLs and their relationship with the adjacent spinal nerve root axilla.

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“…Auch ein Septum medianum dorsale ist vorhanden. Alle diese 3 Strukturen verschmelzen mit dem inneren Aspekt der Dura mater und dienen der Aufhängung des Rückenmarks [7,8].…”

Section: Arachnoidea Mater Und Pia Materunclassified

Spinale Hämatome: Was der Radiologe wissen muss

Pierce¹,

Donahue²,

Nacey³

et al. 2019

Neuroradiol Scan

0

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Spinal hematomas are a frequent indication for radiologic evaluation and can be a diagnostic dilemma for many radiologists and surgeons. There are four types of spinal hematomas: epidural, subdural, subarachnoid, and intramedullary (spinal cord) hematomas. Because they differ by their location in relationship to the meningeal membranes and spinal cord, unique radiologic appearances can be recognized to distinguish these types of spinal hemorrhage. Anatomic knowledge of the spinal compartments is essential to the radiologist for confident imaging diagnosis of spinal hematomas and to specify correct locations. MRI is the modality of choice to diagnose the location of the hematoma, characterize important features such as age of the hemorrhage, and detect associated injury or disease. Each type of spinal hematoma has imaging patterns and characteristics that distinguish it from the others, as these specific spinal compartments displace and affect the adjacent anatomic structures. Early detection and accurate localization of spinal hematomas is critical for the surgeon to address the proper treatment and surgical decompression, when necessary, as neurologic deficits may otherwise become permanent.

show abstract

The denticulate ligament: anatomical properties, functional and clinical significance

Abstract: DL histology and anatomy are strongly correlated with the function of this structure at different spinal levels. It is important to have accurate knowledge about DLs as these structures are relevant for clinical procedures that involve the spinal cord or craniovertebral junction.

Cited by 36 publications

References 13 publications

Spinal Hematomas: What a Radiologist Needs to Know

Spinal Hematomas: What a Radiologist Needs to Know

Microsurgical anatomy of the denticulate ligaments and their relationship with the axilla of the spinal nerve roots

Spinale Hämatome: Was der Radiologe wissen muss

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