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Evaluation of human dura mater resistance in MTS Mini Bionix 85802 System

100%

Kedzia A. , Zuchowski R. , Wiczkowski E.

nr 4

Implanty do rekonstrukcji opony twardej – przegląd isntniejących rozwiązań

75%

Andrzejewska A. , Mazurkiewicz A.

2014

tom z. 8

7--12

W pracy poruszono zagadnienie biomateriałów stosowanych w neurochirurgii. Dokonano przeglądu dostępnych na rynku kolagenowych folii do zaopatrywania ubytków opony twardej oraz porównania ich właściwości z opatentowanym w 2006 r. substytutem opony twardej (EP 1484070 B1).

In this paper describes biomaterials, which are used in neurosurgery. This paper is a review of existing solutions of collagen dura mater substitute. Properties each of featured solutions was compared with properties of patented in 2006 dura mater substitute (EP 1484070 B1).

The clinical significance of the petroclinoid ligament

63%

Skrzat J. , Walocha J. , Jaworek J. K. , Mroz I.

tom 66

nr 1

This report describes the topography and structure of the petroclinoid ligament with reference to its clinical significance. Observations of this ligament were performed on 24 sections of human heads. Remnants of the ossified form of this ligament were sought in 73 dry human skulls. It was found that the petroclinoid ligament existed as an anterior and posterior fold of the dura mater and stretched from the petrous apex and the anterior and posterior clinoid process respectively. We assessed the close proximity of this ligament to the oculomotor nerve. In one case we found a partially ossified posterior petroclinoid ligament, which appeared as a bony spike that arose posteriorly and inferiorly from the posterior clinoid process.

A complex dural-venous variation in the posterior cranial fossa: a triplicate falx cerebelli and an aberrant venous sinus

63%

Shoja M. M. , Tubbs R. S. , Loukas M. , Shokouhi G. , Oakes W. J.

nr 2

Variations of the dural folds and the dural venous sinuses are seldom reported in the extant medical literature. Such variations in the posterior cranial fossa may be problematic in various diagnostic and operative procedures of this region. We report our observation of an extremely rare variation of the falx cerebelli and posterior cranial fossa venous sinuses encountered upon dissection of a young male cadaver. In this specimen the falx cerebelli was duplicated with dimensions of 45.3 × 5.1 mm and 49.8 × 5.3 mm for the right and left falces respectively. The distance between the two falces was 3.2, 4.5 and 7.8 mm at their proximal, middle and distal thirds. An accessory small falx (31.8 × 2 mm) was also found approximately 3.4 mm lateral to the right falx cerebelli and blended with the lateral surface of the right falx cerebelli. There was only one occipital venous sinus (diameter, 2.5 mm) and no marginal sinus was detected. At the right floor of the posterior cranial fossa (posterolateral to the foramen magnum) an additional dural venous sinus was found, which connected the terminal portion of the right sigmoid sinus to the occipital and right transverse sinuses via one medial and two lateral branches respectively. We believe that such a complex dural-venous variation in the posterior cranial fossa has not previously been reported. Neurosurgeons and neuroradiologists should be aware of such variations, as these could be potential sources of haemorrhage during suboccipital approaches or may lead to erroneous interpretations of imaging of the posterior cranial fossa.