• Neurol. Med. Chir. (Tokyo) · Jan 2015

    The Effectiveness of the Stereotactic Burr Hole Technique for Deep Brain Stimulation.

    • Keisuke Toyoda, Eiichirou Urasaki, Tetsuya Umeno, Waka Sakai, Akiko Nagaishi, Shunya Nakane, Takayasu Fukudome, and Yuzo Yamakawa.
    • Department of Neurosurgery, National Hospital Organization, Nagasaki Kawatana Medical Center.
    • Neurol. Med. Chir. (Tokyo). 2015 Jan 1; 55 (9): 766-72.

    AbstractDeep brain stimulation (DBS) is performed by burr hole surgery. In microelectrode recording by multi-channel parallel probe, because all microelectrodes do not always fit in the burr hole, additional drilling to enlarge the hole is occasionally required, which is time consuming and more invasive. We report a stereotactic burr hole technique to avoid additional drilling, and the efficacy of this novel technique compared with the conventional procedure. Ten patients (20 burr holes) that received DBS were retrospectively analyzed (5 in the conventional burr hole group and 5 in the stereotactic burr hole group). In the stereotactic burr hole technique, the combination of the instrument stop slide of a Leksell frame and the Midas Rex perforator with a 14-mm perforator bit was attached to the instrument carrier slide of the arc in order to trephine under stereoguidance. The efficacy of this technique was assessed by the number of additional drillings. Factors associated with additional drilling were investigated including the angle and skull thickness around the entry points. Four of the 10 burr holes required additional drilling in the conventional burr hole group, whereas no additional drilling was required in the stereotactic burr hole group (p = 0.043). The thicknesses in the additional drilling group were 10.9 ± 0.9 mm compared to 9.1 ± 1.2 mm (p = 0.029) in the non-additional drilling group. There were no differences in the angles between the two groups. The stereotactic burr hole technique contributes to safe and exact DBS, particularly in patients with thick skulls.

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