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Hans E. Bakken, Hiroto Kawasaki, Hiroyuki Oya, Jeremy D. W. Greenlee and Matthew A. Howard III

a functional map of the human cerebral cortex. 10, 13 In this report we describe our experience using localized cortical cooling, a mapping method that has theoretical advantages over traditional methods of electrical stimulation. Materials and Methods We designed and tested a variety of devices (cooling probes) with the common design features described in Fig. 1 . A localized region of the brain surface is cooled using a stainless-steel cooling probe chamber. The device is actively cooled to a temperature close to, but not below, 0°C by infusing chilled

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David Dornbos III, Constantine L. Karras, Nicole Wenger, Blake Priddy, Patrick Youssef, Shahid M. Nimjee and Ciarán J. Powers

T he treatment of intracranial aneurysms has increasingly shifted away from open microsurgery as endovascular techniques and technologies have continued to improve. The introduction of flow diversion marked another major paradigm shift in the neurosurgical treatment of intracranial aneurysms. Initially approved for the treatment of large, broad-necked aneurysms of the petrous to supraclinoid internal carotid artery (ICA), 2 , 21 utilization of the Pipeline embolization device (PED, Covidien/ev3) has been described in numerous other locations and aneurysm

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Masahiro Kanayama, Bryan W. Cunningham, Charles J. Haggerty, Kuniyoshi Abumi, Kiyoshi Kaneda and Paul C. McAfee

collapse or dislodgment of the donor bone. 8, 13, 15 As a key to reduce or eliminate these complications, interbody fusion implants have recently been gaining acceptance as a method for ensuring lumbar interbody arthrodesis. Interbody fusion devices provide anterior structural support of the operative segment and eliminate the need for harvesting tricortical bone block from the iliac crest. Recently, various types of interbody fusion devices have been developed and have produced successful clinical outcomes. 1, 12, 14, 18 To our knowledge, however, few comparative

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Hiroshi Yamada

P ostshunt subdural hematoma is more often observed in patients with shunts using relatively low-pressure valves. 4 This complication may occur even when high-pressure valves are employed. Few attempts have been made to prevent excessively lowered intracranial pressure (ICP). Portnoy, et al. , 3, 5, 6 have designed a special anti-siphon valve, but subdural hematomas have been reported in patients in whom these valves were used. 5 The present author has developed a simplified device to regulate cerebrospinal fluid (CSF) drainage. This technique requires no

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Thomas R. Marotta, Howard A. Riina, Ian McDougall, Donald R. Ricci and Monika Killer-Oberpfalzer

S ixty-four percent of all cerebral aneurysms occur at arterial bifurcations. 3 To date, there are no commercially available stents and few endoluminal devices that are specifically designed to treat bifurcation aneurysms. Current options for the endovascular treatment of bifurcation aneurysms include 1) use of simple coiling (no stent) and balloon remodeling; 2) use of commercially available stents “off-label” to create a Y- or T-stent in conjunction with coils; 3) placement of coil-retaining devices in the parent artery (e.g., PulseRider [Pulsar Vascular

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David I. Pitskhelauri, Alexander N. Konovalov, Georgy A. Shekutev, Nikolay B. Rojnin, Igor A. Kachkov, Dmitry Y. Samborskiy, Alexander Z. Sanikidze and Dmitry N. Kopachev

A fter the counter-balanced surgical microscope was introduced into surgical practice, the mouth switch was proposed for hands-free movement of the well-balanced microscope. 2 , 3 Concurrently the foot control panel, allowing a surgeon to adjust optic parameters (focus and zoom), gained a wide acceptance. 1 Using these 2 devices simultaneously lets a surgeon perform surgery without taking his or her hands away from the operative field. Nevertheless, despite the advantages of the above-described devices, there are significant limitations to their use

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Masashi Neo, Mutsumi Matsushita, Tadashi Yasuda, Takeshi Sakamoto and Takashi Nakamura

posteromedial direction to the vertebral groove. 10 Therefore, we designed an aiming device that enables us to insert a guide wire along this course. In the present study, we successfully used this device and a flexible screw-inserting system in 10 patients. Clinical Material and Methods The Device The instruments consist of a specially designed aiming device ( Fig. 1 upper left and right ) and the Reunion Bone Screw System (Surgical Dynamics Inc., Norwalk, CT). The latter is composed of guide wires, a flexible cannulated drill, a tap, a hex screwdriver, and

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Federica Anasetti, Fabio Galbusera, Hadi N. Aziz, Chiara M. Bellini, Alessandro Addis, Tomaso Villa, Marco Teli, Alessio Lovi and Marco Brayda-Bruno

Interspinous devices are widely used in Europe for the treatment of lumbar stenosis. The purposes of these devices are to provide some stabilization after decompression, to restore foraminal height, and to unload the facet joints. 22 They allow for the preservation of a ROM in the implanted segment, thus avoiding or limiting possible overloading and early degeneration of the adjacent segments as induced by fusion, 10 as confirmed in a previous FE study. 3 The DIAM spinal stabilization system (Medtronic, Ltd.) is an interspinous implant made of silicone, covered with a

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Ammar H. Hawasli, Jawad M. Khalifeh, Ajay Chatrath, Chester K. Yarbrough and Wilson Z. Ray

open transforaminal lumbar interbody fusion (OP-TLIF) with regards to superior long-term pain scores, reduced blood loss, reduced hospital length of stay, and reduced complication rates. 7 MIS-TLIF has similar fusion rates to OP-TLIF but a higher amount of radiation exposure than OP-TLIF. 7 MIS-TLIF also has a lower calculated 2-year cost and accelerated return to work when compared with OP-TLIF. 14 , 15 MIS-TLIF technology has evolved to include expandable interbody devices. 3 , 8 , 11 Despite their recent inclusion in the armamentarium available to a minimally

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Visish M. Srinivasan, Andrew P. Carlson, Maxim Mokin, Jacob Cherian, Stephen R. Chen, Ajit Puri and Peter Kan

T he Pipeline embolization device (PED; Medtronic) was approved by the US FDA for the treatment of large and giant intracranial aneurysms from the petrous to the superior hypophyseal segment of the internal carotid artery (ICA). It has, in a short time, transformed the treatment paradigm for giant aneurysms that are challenging surgically. However, flow diversion treatment has its own unique challenges and pitfalls, especially in the treatment of very large and giant aneurysms. Foreshortening and migration have been described in intracranial self