Jugular tubercle: morphometric analysis and surgical significance

Mintelis, Apostolos; Sameshima, Tetsuro; Bulsara, Ketan R.; Gray, Linda; Friedman, Allan H.; Fukushima, Takanori

doi:10.3171/jns.2006.105.5.753

Cited by 31 publications

(13 citation statements)

References 19 publications

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“…The degree of resection of the OC depends on the pathology, exact location, and variations of morphometry and morphology of OC and related foramina in this region. [10111214] Recently, TCA has gained importance as it minimizes the brain retraction at the cost of maximum bone removal. In these procedures, vital neurovascular structures near OC may be compromised during drilling and excessive resection may also lead to craniovertebral instability.…”

Section: Discussionmentioning

confidence: 99%

The anatomical perspective of human occipital condyle in relation to the hypoglossal canal, condylar canal, and jugular foramen and its surgical significance

Verma

Kumar

Mahajan

et al. 2016

J Craniovert Jun Spine

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Background:The transcondylar approach (TCA) has gained importance in recent era which enables shorter and direct route to access the lesions ventral to the brainstem. The important step in this approach is resection of the occipital condyle (OC). The detailed knowledge of bony anatomy of OC and its relation to the hypoglossal canal (HC), condylar canal (CC), and jugular foramen (JF) is very important to avoid any iatrogenic injury during craniovertebral surgeries. The aim of the present study is to conduct a morphometric and morphological study and note the variations of the OC and the structures surrounding it in North Indian population.Materials and Methods:The study was carried out on 100 OC. Morphometric measurements of OC and the distances of HC and JF from the posterior end of OC were noted. In addition, the extent of the HC and JF in relation to OC, presence or absence of CC, shape of the OC, and its articular facet were also noted.Results:The incidence of short OC was seen in 13% skulls. The most common shape of OC was oval or rhomboid. Even though the articular facet was convex in majority of skulls but flat (10%) and concave (1%) were also observed. The external and internal distance of HC from the posterior end of OC was13.83 mm and 10.66 mm on the right side and 15.02 mm and 11.89 mm on the left side. The OC was related in its middle 1/3 to the HC in 15% skulls and to the whole extent of JF in 3% skulls. Thirty-four percent skulls displayed the septa in the HC. The CC was present bilaterally in 38% skulls and unilaterally in 40% skulls.Conclusion:The OC and related structures such as HC, CC, and JF are likely to have variations in respect to morphometry and morphology. This study may prove helpful to neurosurgeons operating in this field, especially during TCA where neurovascular structures emerging from these canals and foramen are more vulnerable to injury.

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Section: Discussionmentioning

confidence: 99%

The anatomical perspective of human occipital condyle in relation to the hypoglossal canal, condylar canal, and jugular foramen and its surgical significance

Verma

Kumar

Mahajan

et al. 2016

J Craniovert Jun Spine

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“…Regarding the JT, equally wide variability was identified from the present data about its prominence within the FM area. Mintelis et al have reported that the average length, width, and thickness of the JT were 16.5, 11.5, and 0.61 mm, respectively (32). However, these measurements were challenging to obtain directly from CT scans during preoperative planning.…”

Section: A B D Ementioning

confidence: 99%

Morphometric and radiomorphometric study of the correlation between the foramen magnum region and the anterior and posterolateral approaches to ventral intradural lesions

Luzzi

Maestro

Elia

et al. 2019

Turkish Neurosurgery

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AIM: To identify the range of dimensional morphometric variability correlated to the basilar and condylar part of the occipital bone, which may affect the choice of approach to ventral intradural foramen magnum (FM) lesions. MATERIAL and METHODS: In total, 25 dry skulls and 50 head computed tomography (CT) scan results have been assessed in detail, focusing on the FM, occipital condyles, jugular tubercles (JT), and hypoglossal canals (HC). A morphometric analysis has been carried out using linear and angular measurements to estimate the range of the dimensional variability of these structures. Data were presented as mean ± standard deviation, ranges, and interquartile range on a boxplot. The sagittal intercondylar angle (SICA) and anterior condylar angle (ACA) have been found to be important in estimating the axial orientation of the condyles, whereas the JT-HC interline ratio has indicated the prominence of the tubercles. RESULTS: The SICA and ACA have exhibited high variability. The average JT-HC interline ratio was 0.8. Wider SICA-ACA and higher JT-HC interline ratio make the posterolateral approach advantageous. An anterior medial or far-medial endoscopic route is indicated in opposite conditions. In this study, two illustrative cases have been reported. CONCLUSION: A cautious preoperative morphometric evaluation of the FM region must be considered prior to using tailored and safe anterior endoscopic and posterolateral approaches to ventral intradural lesions to identify the advantages of a certain corridor as much as possible, thereby minimizing the risk of complications.

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“…Therefore, anatomical morphometric studies (2,4,6,14,15,18) and radiological investigations (17) were performed to contribute to the knowledge of this area. Both radiological and complementary anatomical investigations were also reported in the related literature (12). It is still imperative to have both radiological and anatomical measurements and the comparison of the findings to contribute for the better delineation of this subject.…”

Section: Introductionmentioning

confidence: 97%

Anatomical variations of the foramen magnum, occipital condyle and jugular tubercle

Avcı¹,

Dağtekin²,

Öztürk³

et al. 2010

Turkish Neurosurgery

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Jugular tubercle: morphometric analysis and surgical significance

Abstract: Morphometric data on the JT contribute significantly to the neurosurgeon's task of skull base drilling. The 3D CT scans were useful in the preoperative planning.

Cited by 31 publications

References 19 publications

The anatomical perspective of human occipital condyle in relation to the hypoglossal canal, condylar canal, and jugular foramen and its surgical significance

The anatomical perspective of human occipital condyle in relation to the hypoglossal canal, condylar canal, and jugular foramen and its surgical significance

Morphometric and radiomorphometric study of the correlation between the foramen magnum region and the anterior and posterolateral approaches to ventral intradural lesions

Anatomical variations of the foramen magnum, occipital condyle and jugular tubercle

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