{"id":"36c09081-8bb6-4cf8-9443-f601a249f854","slug":"ballistics-for-neurosurgeons-effects-of-firearms-of-customized-cranioplasty-implants","title":"Ballistics for neurosurgeons: Effects of firearms of customized cranioplasty implants","authors":["Johannes Lemcke","Rainer Löser","Andreas Telm","Ullrich Meier"],"abstract":"Introduction: There are about 33,000 deaths caused by gunshot wounds in the USA each year. Probably half of these deaths result from head wounds. Among US Army soldiers, 17% of all ballistic injuries are head wounds. This means that, even in those protected by ballistic helmets, gunshot injuries to the head represent a danger. The aim of this study was to examine the effects of shelling of computer-aided designed (CAD) cranioplasty implants made of two different materials. Methods: An experimental model was developed in an indoor gun range. CAD cranioplasties with a material thickness of 2-6 mm, made of titanium or PEEK-OPTIMA® were fixed in a watermelon and shot at with a .222 Remington rifle at a distance of 30 m distance, a .30-06 Springfield rifle at a distance of 30 m, a Luger 9 mm pistol at a distance of 8 m, or a .375 Magnum revolver at a distance of 8 m. The CAD cranioplasties were subsequently inspected for ballistic effects by a neurosurgeon. Results: Titanium CAD cranioplasty implants resisted shots from the 9 mm Luger pistol and were penetrated by both the .222 Remington and the .30-06 Springfield rifle. Shooting with the .357 Magnum revolver resulted in the titanium implant bursting. PEEK-OPTIMA® implants did not resist bullets shot from any weapon. The implants burst on shooting with the 9 mm Luger pistol, the .222 Remington, the .30-06 Springfield rifle, and the .357 Magnum revolver. Conclusions: Titanium CAD cranioplasty implants may offer protection from ballistic injuries caused by small caliber weapons fired at short distances. This could provide a life-saving advantage in civilian as well as military combat situations.","thumbnailUrl":"https://sni-digital-videos.s3.amazonaws.com/articles/36c09081-8bb6-4cf8-9443-f601a249f854/featured/hero-1782420855571.png","publishDate":"2013-04-03T00:00:00.000Z","doi":"10.4103/2152-7806.110027","categories":["Original Article"],"fullTextUrl":"https://surgicalneurologyint.com/api/articles/36c09081-8bb6-4cf8-9443-f601a249f854/pdf"}