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Hiroshi Nakagawa, Sang-Don Kim, Junichi Mizuno, Yukoh Ohara and Kiyoshi Ito

procedures). There were 30 men and 40 women with a mean age of 61 ± 13 years (range 28–84 years). In patients with cervical disorders, there were 17 cases of OPLL, 11 cases of cervical spondylosis, and one case of tumor (metastatic cancer). There were 35 cases involving lumbar degenerative disease such as lumbar stenosis, spondylolisthesis, and foraminal stenosis. Finally, in patients with thoracic lesions, ossification of the ligamentum flavum and OPLL were the major problems. The ultrasonic bone curette was used to remove a lower thoracic ossified ligamentum flavum via a

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Mohamad Bydon, Risheng Xu, Kyriakos Papademetriou, Daniel M. Sciubba, Jean-Paul Wolinsky, Timothy F. Witham, Ziya L. Gokaslan, George Jallo and Ali Bydon

damage to surrounding soft tissues and important structures such as nerves, blood vessels, and mucosa. 11 , 37 In neurosurgery, ultrasonic aspirators have been used to remove soft-tissue tumors such as meningiomas and vestibular schwannomas. 32 More recently within the past few years, ultrasonic bone curettes have been adapted to perform not only endoscopic bone removal over the skull base, but also laminectomies of the spinal column. 6–8 , 24 , 28 , 32 , 33 , 38 , 41 , 46 In a sequence of case series and technical notes, the Sonopet UST-2001 (Miwatec Co., Ltd.) has

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Han Soo Chang, Masahiro Joko, Joon Suk Song, Kiyoshi Ito, Tatsushi Inoue and Hiroshi Nakagawa

anterior clinoidectomy, 1 , 3 , 6 , 10 , 16 which is also our preferred technique. Drilling of the optic canal, however, has its own risks. It may injure the already compromised optic nerve either directly by mechanical compression or indirectly by the heat produced by the drilling. Therefore, this procedure must be undertaken with extreme care, and it requires a certain degree of expertise. An ultrasonic bone curette ( Fig. 1 ) is a device with an oscillating metal tip developed for resection of osseous tissues. Use of this device for anterior clinoidectomy and

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-0684 American Association of Neurological Surgeons 2013.3.FOC-DSPNABSTRACTS Oral Poster Abstract Mayfield Basic Science Award 256. Safety and Efficacy of an Ultrasonic Bone Curette in Reduction of Intraoperative Durotomies: Outcomes in 337 Patients Mohamad Bydon , MD , Risheng Xu , Kyriakos Papademetriou , BS , Daniel M. Sciubba , BS MD , Jean-Paul Wolinsky , MD , Timothy F. Witham , MD BS , Ziya L. Gokaslan , MD , and Ali Bydon , MD (Johns Hopkins Hospital) (Johns Hopkins

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Carl H. Snyderman and Paul A. Gardner

and limits options in the event of a vascular injury. We have found it most advantageous to position a 45° endoscope in the nasal corridor opposite the tumor with passage of dissecting instruments (drill, suction devices, etc.) through the CTM corridor. This provides excellent visualization without interference with instrumentation. The CTM corridor is longer than a transnasal corridor, however, and may exceed the length of the ultrasonic bone curette and some drills. We use an endoscopic drill with extended drill bits. Reconstruction of the anterior maxillary wall

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Dmitriy Petrov, Michael Spadola, Connor Berger, Gregory Glauser, Ahmad F. Mahmoud, Bert O’Malley and Neil R. Malhotra

Neck 39 : 786 – 790 , 2017 10.1002/hed.24685 28139028 8 Hadeishi H , Suzuki A , Yasui N , Satou Y : Anterior clinoidectomy and opening of the internal auditory canal using an ultrasonic bone curette . Neurosurgery 52 : 867 – 871 , 2003 10.1227/01.NEU.0000053147.67715.58 12657183 9 Hockstein NG , O’Malley BW Jr , Weinstein GS : Assessment of intraoperative safety in transoral robotic surgery . Laryngoscope 116 : 165 – 168 , 2006 10.1097/01.mlg.0000199899.00479.75 16467698 10 Hsieh PC , Xu R , Sciubba DM , McGirt MJ

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Kiyoshi Ito, Tatsuro Aoyama, Takuya Nakamura, Yoshiki Hanaoka, Tetsuyoshi Horiuchi and Kazuhiro Hongo

to prevent postoperative cerebrospinal fluid leakage . J Neurosurg Spine 23 : 812 – 819 , 2015 6 Ito K , Ishizaka S , Sasaki T , Miyahara T , Horiuchi T , Sakai K , : Safe and minimally invasive laminoplastic laminotomy using an ultrasonic bone curette for spinal surgery: technical note . Surg Neurol 72 : 470 – 475 , 2009 7 Kaufman BA , Matthews AE , Zwienenberg-Lee M , Lew SM : Spinal dural closure with nonpenetrating titanium clips in pediatric neurosurgery . J Neurosurg Pediatr 6 : 359 – 363 , 2010 8 Nagata K

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Kiyoshi Ito, Tetsuyoshi Horiuchi, Kiyomitsu Oyanagi, Tetsuo Nomiyama and Kazuhiro Hongo

carotid artery induced by aneurysmal wrapping and coating materials . Neurol Med Chir (Tokyo) 39 : 134 – 140 , 1999 7 Hida K , Yamaguchi S , Seki T , Yano S , Akino M , Terasaka S , : Nonsuture dural repair using polyglycolic acid mesh and fibrin glue: clinical application to spinal surgery . Surg Neurol 65 : 136 – 143 , 2006 8 Ito K , Ishizaka S , Sasaki T , Miyahara T , Horiuchi T , Sakai K , : Safe and minimally invasive laminoplastic laminotomy using an ultrasonic bone curette for spinal surgery: technical note

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Victor Garcia-Navarro, Guido Lancman, Amancio Guerrero-Maldonado, Vijay K. Anand and Theodore H. Schwartz

(Quicktime). References 1 Cappabianca P , Cavallo LM , Esposito I , Barakat M , Esposito F : Bone removal with a new ultrasonic bone curette during endoscopic endonasal approach to the sellar-suprasellar area: technical note . Neurosurgery 66 : 3 Suppl Operative E118 , 2010 2 Cappabianca P , de Divitiis O , Esposito F , Cavallo LM , de Divitiis E , Endoscopic skull base instrumentation . Anand VK , Schwartz TH : Practical Endoscopic Skull Base Surgery San Diego , Plural Publishing , 2007 . 45 – 56 3 Cappabianca P

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Kern H. Guppy, Indro Chakrabarti, Richard S. Isaacs and Jae H. Jun

: Osteosarcoma of the thoracolumbar spine: total en bloc spondylectomy. A case report . J Bone Joint Surg Am 79 : 453 – 458 , 1997 16 Kim K , Isu T , Matsumoto R , Isobe M , Kogure K : Surgical pitfalls of an ultrasonic bone curette (SONOPET) in spinal surgery . Neurosurgery 59 : 4 Suppl 2 ONS390 – ONS393 , 2006 17 Kim K , Isu T , Morimoto D , Kominami S , Kobayashi S , Teramoto A : Anterior vertebral artery decompression with an ultrasonic bone curette to treat bow hunter's syndrome . Acta Neurochir (Wien) 150 : 301 – 303