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Hiroshi Nakagawa - One of the best experts on this subject based on the ideXlab platform.
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Recapping hemilaminoplasty for spinal surgical disorders using ultrasonic bone Curette.
Surgical neurology international, 2012Co-Authors: Hidenori Matsuoka, Yasunobu Itoh, Shinichi Numazawa, Masato Tomii, Kazuo Watanabe, Yoshitaka Hirano, Hiroshi NakagawaAbstract:OBJECTIVE The authors present a novel method of the recapping hemilaminoplasty in a retrospective study of patients with spinal surgical disorders. This report describes the surgical technique and the results of hemilaminoplasty using an ultrasonic bone Curette. The aim of this study was to examine the safety and effectiveness of the hemilaminoplasty technique with ultrasonic bone Curette. METHODS Between April 2003 and July 2011, 33 patients with various spinal diseases (17 spinal tumors, 5 dural arteriovenous fistulas, 3 syringomyelia, 2 sacral perineural cysts, and 2 arachnoid cysts) were treated microsurgically by using an ultrasonic bone Curette with scalpel blade and lightweight handpiece. The ultrasonic bone Curette was used for division of lamina. After resection of the lesion, the excised lamina was replaced exactly in situ to its original anatomic position with a titanium plate and screw. Additional fusion technique was not required and the device was easy to handle. All patients were observed both neurologically and radiologically by dynamic plain radiographs and computed tomography (CT) scan. RESULTS The operation was performed successfully and there were no instrument-related complications such as dural laceration, nerve root injury, and vessels injury. The mean number of resected and restored lamina was 1.7. CT confirmed primary bone fusion in all patients by 12 months after surgery. CONCLUSION The ultrasonic bone Curette is a useful instrument for recapping hemilaminoplasty in various spinal surgeries. This method allows anatomical reconstruction of the excised bone to preserve the posterior surrounding tissues.
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ultrasonic bone curettage for optic canal unroofing and anterior clinoidectomy technical note
Journal of Neurosurgery, 2006Co-Authors: Han Soo Chang, Joon Suk Song, Tatsushi Inoue, Masahiro Joko, Hiroshi NakagawaAbstract:✓Extradural unroofing of the optic canal and subsequent mobilization of the optic nerve is a useful technique in the surgical treatment of parasellar tumors; however, the drilling procedure itself is associated with the risk of optic nerve damage. A safer technique would certainly be beneficial. The ultrasonic bone Curette is a device developed in Japan for safer bone removal. Its use in intradural anterior clinoidectomy and opening of the internal auditory meatus has been reported before. In this article the authors describe their experience in using this device for extradural unroofing of the optic canal in patients with parasellar tumors. Between March 2002 and November 2004, the aforementioned technique was used in the treatment of eight patients with parasellar tumors. After undertaking a frontotemporal craniotomy and orbital osteotomy, an ultrasonic bone Curette was used to unroof the optic canal via an epidural approach; in five cases anterior clinoidectomy was added subsequently. Using an ultrason...
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Ultrasonic bone curettage for optic canal unroofing and anterior clinoidectomy: Technical note
Journal of neurosurgery, 2006Co-Authors: Han Soo Chang, Joon Suk Song, Tatsushi Inoue, Masahiro Joko, Kiyoshi Ito, Hiroshi NakagawaAbstract:Extradural unroofing of the optic canal and subsequent mobilization of the optic nerve is a useful technique in the surgical treatment of parasellar tumors; however, the drilling procedure itself is associated with the risk of optic nerve damage. A safer technique would certainly be beneficial. The ultrasonic bone Curette is a device developed in Japan for safer bone removal. Its use in intradural anterior clinoidectomy and opening of the internal auditory meatus has been reported before. In this article the authors describe their experience in using this device for extradural unroofing of the optic canal in patients with parasellar tumors. Between March 2002 and November 2004, the aforementioned technique was used in the treatment of eight patients with parasellar tumors. After undertaking a frontotemporal craniotomy and orbital osteotomy, an ultrasonic bone Curette was used to unroof the optic canal via an epidural approach; in five cases anterior clinoidectomy was added subsequently. Using an ultrasonic bone Curette, unroofing of the optic canal was completed safely and required much less expertise than that required for standard drilling. The mortality and major morbidity rates were 0%. The visual function outcome was satisfactory, with the overall visual status improving in all seven patients in whom this symptom was present preoperatively. The ultrasonic bone Curette makes the unroofing of the optic canal safer and easier, possibly improving the visual outcome of patients undergoing surgery for parasellar tumors.
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Technical advantages of an ultrasonic bone Curette in spinal surgery
Journal of neurosurgery. Spine, 2005Co-Authors: Hiroshi Nakagawa, Sang Don Kim, Junichi Mizuno, Yukoh Ohara, Kiyoshi ItoAbstract:Object. The authors discuss the safety and efficacy of an ultrasonic bone Curette in various spinal surgeries and report its advantages in clinical application. Methods. Between April 2002 and September 2003, 76 patients with various spinal diseases (29 cervical, five thoracic, 40 lumbosacral, and two foramen magnum regions) were treated microsurgically by using a Sonopet ultrasonic bone Curette with longitudinal and torsional tips and lightweight handpieces. The operations were performed successfully and the device was easy to handle. There were no instrument-related complications or -induced damage to any structure even when removing osseous spurs or ossified lesions near the dura mater, nerves, and vessels. Conclusions. The ultrasonic Curette is a useful instrument for procedures performed near the dura mater or other neural tissue without excessive heat production or mechanical injury. This device is recommended for various spinal surgeries in addition to high-speed drills or other tools.
Han Soo Chang - One of the best experts on this subject based on the ideXlab platform.
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ultrasonic bone curettage for optic canal unroofing and anterior clinoidectomy technical note
Journal of Neurosurgery, 2006Co-Authors: Han Soo Chang, Joon Suk Song, Tatsushi Inoue, Masahiro Joko, Hiroshi NakagawaAbstract:✓Extradural unroofing of the optic canal and subsequent mobilization of the optic nerve is a useful technique in the surgical treatment of parasellar tumors; however, the drilling procedure itself is associated with the risk of optic nerve damage. A safer technique would certainly be beneficial. The ultrasonic bone Curette is a device developed in Japan for safer bone removal. Its use in intradural anterior clinoidectomy and opening of the internal auditory meatus has been reported before. In this article the authors describe their experience in using this device for extradural unroofing of the optic canal in patients with parasellar tumors. Between March 2002 and November 2004, the aforementioned technique was used in the treatment of eight patients with parasellar tumors. After undertaking a frontotemporal craniotomy and orbital osteotomy, an ultrasonic bone Curette was used to unroof the optic canal via an epidural approach; in five cases anterior clinoidectomy was added subsequently. Using an ultrason...
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Ultrasonic bone curettage for optic canal unroofing and anterior clinoidectomy: Technical note
Journal of neurosurgery, 2006Co-Authors: Han Soo Chang, Joon Suk Song, Tatsushi Inoue, Masahiro Joko, Kiyoshi Ito, Hiroshi NakagawaAbstract:Extradural unroofing of the optic canal and subsequent mobilization of the optic nerve is a useful technique in the surgical treatment of parasellar tumors; however, the drilling procedure itself is associated with the risk of optic nerve damage. A safer technique would certainly be beneficial. The ultrasonic bone Curette is a device developed in Japan for safer bone removal. Its use in intradural anterior clinoidectomy and opening of the internal auditory meatus has been reported before. In this article the authors describe their experience in using this device for extradural unroofing of the optic canal in patients with parasellar tumors. Between March 2002 and November 2004, the aforementioned technique was used in the treatment of eight patients with parasellar tumors. After undertaking a frontotemporal craniotomy and orbital osteotomy, an ultrasonic bone Curette was used to unroof the optic canal via an epidural approach; in five cases anterior clinoidectomy was added subsequently. Using an ultrasonic bone Curette, unroofing of the optic canal was completed safely and required much less expertise than that required for standard drilling. The mortality and major morbidity rates were 0%. The visual function outcome was satisfactory, with the overall visual status improving in all seven patients in whom this symptom was present preoperatively. The ultrasonic bone Curette makes the unroofing of the optic canal safer and easier, possibly improving the visual outcome of patients undergoing surgery for parasellar tumors.
Mario Ammirati - One of the best experts on this subject based on the ideXlab platform.
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Optic nerve surface temperature during intradural anterior clinoidectomy: a comparison between high-speed diamond burr and ultrasonic bone Curette.
Neurosurgical review, 2014Co-Authors: Varun R. Kshettry, Xiaobing Jiang, Silky Chotai, Mario AmmiratiAbstract:Ultrasonic bone Curettes are increasingly used in cranial base surgery. The heat generated by these devices during anterior clinoidectomy has not been evaluated. The purpose of this study was to compare the optic nerve surface temperature during intradural anterior clinoidectomy using the drill and ultrasonic bone Curette. Ten fresh cadaver heads were used. During intradural clinoidectomy and optic nerve unroofing with either a 2-mm diamond burr drill or ultrasonic bone Curette, temperature was measured along the medial cisternal and proximal intracanalicular segments of the optic nerve. Additional experiments were performed to determine optimal ultrasonic bone Curette settings for anterior clinoidectomy. At the lateral cisternal segment, peak and mean temperature were significantly higher with the ultrasonic bone Curette (peak 38.8 vs 29.3 °C, p = 0.03, mean 29.5 vs 22.6 °C, p = 0.003). At the proximal intracanalicular segment, only peak temperature was significantly higher with the ultrasonic bone Curette (peak 32.0 vs 23.5 °C, p = 0.02, mean 26.9 vs 22.4 °C, p = 0.07). Using standard company settings, room temperature irrigation fluid was heated by the oscillating tip to peak temperature 36.1 °C without drilling. In order to maintain emitted irrigation fluid at room temperature, optimal settings were power 70 %, cool irrigation (5 °C) at 40 mL/min. Using these settings, the ultrasonic bone Curette generated optic nerve surface temperature measurements similar to the drill. Further work is necessary to translate these findings into the operating room.
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Optic Nerve Surface Temperature during Intradural Anterior Clinoidectomy: A Comparison Between High-Speed Diamond Burr and Ultrasonic Bone Curette
Journal of Neurological Surgery Part B: Skull Base, 2014Co-Authors: Varun R. Kshettry, Xiaobing Jiang, Silky Chotai, Mario AmmiratiAbstract:Background: Ultrasonic bone Curettes are increasingly used in cranial base surgery. The heat generated by these devices during anterior clinoidectomy has not been evaluated. Objective: To compare optic nerve surface temperature during intradural anterior clinoidectomy using the drill and ultrasonic bone Curette. Methods: Ten fresh cadaver heads were used. During intradural clinoidectomy and optic nerve unroofing with either 2mm diamond burr drill or ultrasonic bone Curette, temperature was measured along the medial cisternal and proximal intracanalicular segments of the optic nerve. Additional experiments were performed to determine optimal ultrasonic bone Curette settings for anterior clinoidectomy. Results: At the medial cisternal segment, peak and mean temperature were significantly higher with the ultrasonic bone Curette (peak 38.8 vs 29.3°C, p = 0.03, mean 29.5 vs 22.6°C, p = 0.003). At the proximal intracanalicular segment, only peak temperature was significantly higher with the ultrasonic bone Curette (peak 32.0 vs 23.5°C, p = 0.02, mean 26.9 vs 22.4°C, p = 0.07). Using standard company settings, room temperature irrigation fluid was heated by the oscillating tip to peak temperature 36.1°C without drilling. To maintain emitted irrigation fluid at room temperature, optimal settings were amplitude 70%, cool irrigation (5°C) at 40mL/min. Using these settings, the ultrasonic bone Curette generated optic nerve surface temperature measurements similar to the drill. Conclusion: Using standard company settings, the ultrasonic bone Curette generates significantly higher temperatures at the optic nerve surface. Optimal ultrasonic bone Curette settings were amplitude 70% with cool irrigation (5°C) at 40mL/min. Further work is necessary to translate these findings into the operating room.
Kiyoshi Ito - One of the best experts on this subject based on the ideXlab platform.
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Safe and minimally invasive laminoplastic laminotomy using an ultrasonic bone Curette for spinal surgery: technical note.
Surgical neurology, 2009Co-Authors: Kiyoshi Ito, Shigetoshi Ishizaka, Tetsuo Sasaki, Takahiro Miyahara, Tetsuyoshi Horiuchi, Keiichi Sakai, Hiroaki Shigeta, Kazuhiro HongoAbstract:Abstract Background Ultrasonic surgical aspirators have been used mainly for removing brain tumors. Because of their longitudinal and torsional tip, they are used for cutting the bone structures in spinal surgery installing a scalpel-type tip. The purpose of this report is to describe the effectiveness and surgical pitfalls of an ultrasonic bone Curette in laminoplastic laminotomy and hemilaminotomy. Methods We present 12 patients who underwent laminoplastic laminotomy and hemilaminotomy. We used a SONOPET UST-2001 ultrasonic bone Curette with HB-05S handpieces (M and M Co, Ltd, Tokyo, Japan). After a tumor was removed, titanium plates were used for the laminoplastic laminotomy and hemilaminotomy. The technical advantage of an ultrasonic bone Curette and procedure-related complication were examined. Results There were no major procedure-related complications such as cord injury. Wound infection and subcutaneous fluid collection caused by cerebrospinal fluid leakage did not occur for reconstruction of posterior bony structure. In 1 patient with calcified dura mater associated with tumor, dural tear occurred. The width of the tip was narrow enough for resected laminae to be fused postoperatively, and spinal instability did not occur in all cases. Conclusion The scalpel-type ultrasonic bone Curette is useful for cutting bone and effective for reconstruction of the laminae. Laminotomy with an ultrasonic bone Curette is safe and minimally invasive. To prevent dural tear, we recommend drilling laminae to make the bone thin as the first step, followed by cutting the remaining laminae using a bone Curette especially in cases with calcified or tense dura mater.
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Ultrasonic bone curettage for optic canal unroofing and anterior clinoidectomy: Technical note
Journal of neurosurgery, 2006Co-Authors: Han Soo Chang, Joon Suk Song, Tatsushi Inoue, Masahiro Joko, Kiyoshi Ito, Hiroshi NakagawaAbstract:Extradural unroofing of the optic canal and subsequent mobilization of the optic nerve is a useful technique in the surgical treatment of parasellar tumors; however, the drilling procedure itself is associated with the risk of optic nerve damage. A safer technique would certainly be beneficial. The ultrasonic bone Curette is a device developed in Japan for safer bone removal. Its use in intradural anterior clinoidectomy and opening of the internal auditory meatus has been reported before. In this article the authors describe their experience in using this device for extradural unroofing of the optic canal in patients with parasellar tumors. Between March 2002 and November 2004, the aforementioned technique was used in the treatment of eight patients with parasellar tumors. After undertaking a frontotemporal craniotomy and orbital osteotomy, an ultrasonic bone Curette was used to unroof the optic canal via an epidural approach; in five cases anterior clinoidectomy was added subsequently. Using an ultrasonic bone Curette, unroofing of the optic canal was completed safely and required much less expertise than that required for standard drilling. The mortality and major morbidity rates were 0%. The visual function outcome was satisfactory, with the overall visual status improving in all seven patients in whom this symptom was present preoperatively. The ultrasonic bone Curette makes the unroofing of the optic canal safer and easier, possibly improving the visual outcome of patients undergoing surgery for parasellar tumors.
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Technical advantages of an ultrasonic bone Curette in spinal surgery
Journal of neurosurgery. Spine, 2005Co-Authors: Hiroshi Nakagawa, Sang Don Kim, Junichi Mizuno, Yukoh Ohara, Kiyoshi ItoAbstract:Object. The authors discuss the safety and efficacy of an ultrasonic bone Curette in various spinal surgeries and report its advantages in clinical application. Methods. Between April 2002 and September 2003, 76 patients with various spinal diseases (29 cervical, five thoracic, 40 lumbosacral, and two foramen magnum regions) were treated microsurgically by using a Sonopet ultrasonic bone Curette with longitudinal and torsional tips and lightweight handpieces. The operations were performed successfully and the device was easy to handle. There were no instrument-related complications or -induced damage to any structure even when removing osseous spurs or ossified lesions near the dura mater, nerves, and vessels. Conclusions. The ultrasonic Curette is a useful instrument for procedures performed near the dura mater or other neural tissue without excessive heat production or mechanical injury. This device is recommended for various spinal surgeries in addition to high-speed drills or other tools.
Masahiro Joko - One of the best experts on this subject based on the ideXlab platform.
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ultrasonic bone curettage for optic canal unroofing and anterior clinoidectomy technical note
Journal of Neurosurgery, 2006Co-Authors: Han Soo Chang, Joon Suk Song, Tatsushi Inoue, Masahiro Joko, Hiroshi NakagawaAbstract:✓Extradural unroofing of the optic canal and subsequent mobilization of the optic nerve is a useful technique in the surgical treatment of parasellar tumors; however, the drilling procedure itself is associated with the risk of optic nerve damage. A safer technique would certainly be beneficial. The ultrasonic bone Curette is a device developed in Japan for safer bone removal. Its use in intradural anterior clinoidectomy and opening of the internal auditory meatus has been reported before. In this article the authors describe their experience in using this device for extradural unroofing of the optic canal in patients with parasellar tumors. Between March 2002 and November 2004, the aforementioned technique was used in the treatment of eight patients with parasellar tumors. After undertaking a frontotemporal craniotomy and orbital osteotomy, an ultrasonic bone Curette was used to unroof the optic canal via an epidural approach; in five cases anterior clinoidectomy was added subsequently. Using an ultrason...
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Ultrasonic bone curettage for optic canal unroofing and anterior clinoidectomy: Technical note
Journal of neurosurgery, 2006Co-Authors: Han Soo Chang, Joon Suk Song, Tatsushi Inoue, Masahiro Joko, Kiyoshi Ito, Hiroshi NakagawaAbstract:Extradural unroofing of the optic canal and subsequent mobilization of the optic nerve is a useful technique in the surgical treatment of parasellar tumors; however, the drilling procedure itself is associated with the risk of optic nerve damage. A safer technique would certainly be beneficial. The ultrasonic bone Curette is a device developed in Japan for safer bone removal. Its use in intradural anterior clinoidectomy and opening of the internal auditory meatus has been reported before. In this article the authors describe their experience in using this device for extradural unroofing of the optic canal in patients with parasellar tumors. Between March 2002 and November 2004, the aforementioned technique was used in the treatment of eight patients with parasellar tumors. After undertaking a frontotemporal craniotomy and orbital osteotomy, an ultrasonic bone Curette was used to unroof the optic canal via an epidural approach; in five cases anterior clinoidectomy was added subsequently. Using an ultrasonic bone Curette, unroofing of the optic canal was completed safely and required much less expertise than that required for standard drilling. The mortality and major morbidity rates were 0%. The visual function outcome was satisfactory, with the overall visual status improving in all seven patients in whom this symptom was present preoperatively. The ultrasonic bone Curette makes the unroofing of the optic canal safer and easier, possibly improving the visual outcome of patients undergoing surgery for parasellar tumors.
