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KMID : 1001920190620040382
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Journal of Korean Neurosurgical Society
2019 Volume.62 No. 4 p.382 ~ p.388
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Biomechanical Properties of the Cranial Dura Mater with Puncture Defects : An In Vitro Study
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Aydin Hasan Emre
Kizmazoglu Ceren
Kaya Ismail
Husemoglu Bugra
Sozer Gulden
Havitcioglu Hasan
Arslantas Ali
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Abstract
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Objective: The primary aim of this investigation was to explore the nature of dura mater biomechanics following the introduction of puncture defect(s).
Methods: 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).
Results: 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.
Conclusion: 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.
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KEYWORD
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Biomechanical phenomena, Dura mater, Tensile strength, Punctures, Needles
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