Abstract
Nail-gun injuries have become an increasingly prevalent source of penetrating intracranial trauma. Few cases of intracranial nail-gun injuries disturbing major cerebrovascular structures have been reported, and none entailing basilar artery involvement. We report here the case of a 51-year-old male with an intracranial nail-gun injury involving penetration of the distal basilar artery. Operative removal was accomplished under direct vision using a double concentric cranioorbital zygomatic osteotomy for a trans-Sylvian approach. We highlight the principles involved in removing foreign bodies penetrating critical neurovascular structures.
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Acknowledgments
We thank Dr. Michele Johnson for her input on this case.
Disclaimer
Ketan R. Bulsara report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.
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Peter Nakaji, Phoenix, USA
This paper by Englot et al. describes their management of a patient who suffered a nail-gun injury that transited the left temporal lobe and penetrated the basilar artery. Remarkably, the nail produced a nonfatal subarachnoid hemorrhage and occlusion of the basilar artery. Their management consisted of a double concentric craniotomy to leave the nail in place, combined with a trans-Sylvian exposure of the distal basilar artery, both proximally and distally to the nail. This allowed isolation of the opening in the artery and its subsequent primary clipping, with a good neurological outcome.
Nail-gun injuries to the brain are a subset of low-velocity penetrating missile injuries that have more in common with knife wounds, falls onto sharp objects, and spear, arrow, and crossbow bolt injuries than to gunshot wounds. Their low velocity translates into low kinetic energy and a minimal shockwave. Therefore, there is usually little of the peripheral shear damage associated with bullet injuries. The major issue is the location of the nail and the presence or absence of a hematoma. A vascular study is recommended to rule out vascular compromise or injury, such as a traumatic aneurysm. In the absence of vessel injury, it may be reasonable to pull out such an object and obtain a prompt scan. Serial imaging for delayed aneurysm formation may be desirable.
Penetration of a cerebral vessel as occurred in this case is very rare. However, as the authors point out in this paper, there is a high risk of a disaster if it is not managed correctly. They respected the classic principles of vascular neurosurgery: wide exposure and proximal and distal control. The report provides a good illustration of how the application of proper technique can produce a positive outcome in an alarming clinical situation. The authors are to be congratulated on their management.
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Englot, D.J., Laurans, M.S., Abbed, K. et al. Removal of nail penetrating the basilar artery. Neurosurg Rev 33, 501–504 (2010). https://doi.org/10.1007/s10143-010-0268-3
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DOI: https://doi.org/10.1007/s10143-010-0268-3