Bilateral Osseous Interclinoid Bridges Associated with Foramina of Vesalius: A Case Report

Abstract

The current study displays a very rare combination of ossified interclinoid ligaments at the sella turcica region associated with bilateral foramina of Vesalius. In a macerated skull four osseous bars interconnecting the clinoid processes bilaterally were detected. Specifically, two bilateral osseous bars were observed bridging the gap between the anterior and middle clinoid processes forming the so called caroticoclinoid foramen on each side and two additional osseous bridges linked the anterior and posterior clinoid processes, bilaterally. Furthermore, two distinct bilateral foramina of Vesalius were documented just anterior and medial to the foramen ovale. The awareness of the osseous sellar bridges is crucial for the physician and especially the neurosurgeon since their presence may complicate the removal of clinoid processes and induce damage of the internal carotid artery and oculomotor nerves. Furthermore, the likely existence of the foramen of Vesalius may lead to transfer of an infected thrombus into the cranial cavity and complicate a percutaneous trigeminal rhizotomy.

Sella turcica bridging and ossified carotico-clinoid ligament: Correlation with sex and age

“…The existing literature was so far limited to the statement that the concurrent description of sella turcica bridging and ossified carotico-clinoid process is very rare, with a general prevalence ranging between 0.8% and 3.5% in Indian populations; 15,19,21 in addition, the same combination has been the topic of few case reports. 16,23 From this point of view, the present study is the first to highlight a possible association between the two variables.…”

“…12,[19][20][21] In addition, the same combination has been the topic of a few case reports. 22,23 The lack of epidemiological data concerning these variations is a severe deficiency in modern anatomy textbooks. 14,24 A detailed knowledge of the type of ossification of sella turcica can be useful to increase the success rates of surgery.…”

O papel do forame clinocarotídeo na cirurgia de aneurismas da artéria oftálmica

“…8 Esta estrutura pode apresentar algumas variações anatômicas, como a pneumatização do processo clinoide anterior e outras menos frequentes, como o forame clinocarotídeo (em relação com o processo clinoide médio) e a ponte óssea interclinoide (em relação com o processo clinoide posterior). 5,6,8,[9][10][11][12][13][14][15][16][17][18] O forame clinocarotídeo consiste na ossificação do ligamento carotidoclinoide que se extende do lado medial e ponta do processo clinoide anterior e fixa-se na ponta do processo clinoide médio, criando um canal ósseo ao redor da ACI no ponto onde ela sai do seio cavernoso no nível do anel dural distal da ACI (Figura 1). [5][6][7][8]13 Esta situação torna muito difícil e arriscada a remoção desse processo clinoide anterior com possibilidade de lesão vascular na ACI.…”

A Study on Unusual Foramen in the Middle Cranial Fossa in Adult South Indian Dry Skulls

“…Various studies are done on usual and unusual foramina present in the middle cranial fossa and its clinical importance (Paraskevas, Nitsa and Koutsouflianiotis, 2015), (maina, Ducati and lanzino, 2007). (Khairnar and Bhusari, 2013).…”