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Biomechanical Properties of the Cranial Dura Mater with Puncture Defects : An In Vitro Study

2019; Korean Neurosurgical Society; Volume: 62; Issue: 4 Linguagem: Inglês

10.3340/jkns.2018.0130

2005-3711

Hasan Emre Aydın, Ceren Kızmazoğlu, Oskay Kaya, Reşit Buğra Hüsemoğlu, Gulden Sozer, Hasan Havıtçıoğlu, Alı Arslantaş,

Spinal Fractures and Fixation Techniques

The primary aim of this investigation was to explore the nature of dura mater biomechanics following the introduction of puncture defect(s).Twenty-eight dura mater specimens were collected during autopsy from the department of forensic medicine of the authors' institution. Specimens were divided randomly into one of four groups : group I (cranial dura mater; n=7), group II (cranial dura mater with one puncture defect; n=7); group III (cranial dura mater with two puncture defects; n=7), and group IV (cranial dura mater with three puncture defects; n=7).The mean±standard deviation tensile strengths of the dura mater were 8.35±3.16, 8.22±3.32, 7.13±1.77, and 6.94±1.93 MPa for groups I, II, III, and IV, respectively. There was no statistical difference between all groups. A single, two or more punctures of the dura mater using a 20-gauge Quincke needle did not affect cranial dura tensile strength.This biomechanical study may contribute to the future development of artificial dura mater substitutes and medical needles that have a lower negative impact on the biomechanical properties of dura mater.