Sakamoto, Yoshiaki

写真a

Affiliation

School of Medicine, Department of Plastic and Reconstructive Surgery （Shinanomachi）

Position

Senior Assistant Professor (Non-tenured)/Assistant Professor (Non-tenured)
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Career 【 Display / hide 】

  • 2005.04
    -
    2006.03

    Tokyo Dental College Ichikawa General Hospital, 初期臨床研修医

  • 2006.04
    -
    2007.03

    Keio University Hospital, 初期臨床研修医

  • 2007.04
    -
    2008.05

    Keio University School of Medicine, Department of Plastic and Reconstructive Surgery, 専修医

  • 2008.06
    -
    2009.05

    Tokyo Metroporitan Kiyose Children's Hospital, Department of Pediatric Surgery, 医員

  • 2009.06
    -
    2010.03

    Keio University School of Medicine, Department of Plastic and Reconstructive Surgery, 専修医

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Academic Background 【 Display / hide 】

  • 2005.03

    Keio University, Faculty of Medicine

    University, Graduated

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Academic Degrees 【 Display / hide 】

  • 博士, Keio University, Dissertation, 2014.12

    頭蓋骨感染動物モデルにおける抗生剤含有リン酸カルシウム骨セメントの有用性の評価

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Licenses and Qualifications 【 Display / hide 】

  • 日本形成外科学会専門医, 2012.04

  • 日本頭蓋顎顔面外科学会専門医, 2015.12

  • 皮膚腫瘍外科指導専門医, 2015.12

  • Asian Pacific Craniofacial Active member, 2016.12

  • Internal Society of Craniofacial Surgery Active member, 2017.09

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Matters concerning Career Achievements 【 Display / hide 】

  • 2016.04
    -
    Present

    日本シミュレーション外科学会　理事

  • 2017.04
    -
    Present

    日本頭蓋顎顔面学会　代議員

  • 2019.10
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    Present

    日本形成外科学会 渉外・広報委員会委員

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Research Areas 【 Display / hide 】

  • Plastic surgery (Plastic and Reconstructive Surgery)

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Research Keywords 【 Display / hide 】

  • artificial bone

  • Craniomaxillofacial Surgery

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Papers 【 Display / hide 】

  • Posterior distraction first or fronto-orbital advancement first for severe syndromic craniosynostosis

    Iida C., Sakamoto Y., Miwa T., Yoshida K., Kishi K.

    Journal of Craniofacial Surgery （Journal of Craniofacial Surgery)  30 （ 1 ） 47 - 49 2019.01

    ISSN  10492275

    　View Summary

    Copyright © 2018 by Mutaz B. Habal, MD Purpose: Posterior calvarial vault expansion using distraction osteogenesis is performed for syndromic craniosynostosis as the first choice. This procedure allows far greater intracranial volume than fronto-orbital advancement (FOA). This study aimed to determine the most suitable timing of posterior distraction or FOA to sufficiently increase the intracranial volume and remodel the skull shape. Patients and Methods: From 2014 to 2017, the authors performed posterior distraction in 13 patients with syndromic craniosynostosis. Data on premature suture fusion, age at first visit, age at surgery, skull thickness, and complications were collected. Results: Five patients underwent posterior distraction at approximately 12 months of age and had no complications, including cerebrospinal fluid leakage or gull wing deformity. However, during the waiting period for the operation, the skull deformity continues to extend upward (turribrachycephaly). To prevent progress of the skull deformity, the authors performed the operation at approximately 6 months of age in 7 patients. However, in 3 of 7 patients whose lambdoid sutures were opening, gull wing deformity occurred. From these results, in a patient with severe Beare-Stevenson syndrome, the authors performed FOA first at 5 months of age, followed by posterior distraction at 12 months of age, and achieved favorable results. Conclusions: Treatment patterns are patient specific and should be tailored to premature suture fusion, specific skull deformity, and required intracranial volume of each patient.

  • Multi-stage preparation for the repair of complicated skull defects

    Sakamoto Y., Arnaud E.

    Neurologia Medico-Chirurgica （Neurologia Medico-Chirurgica)  59 （ 5 ） 172 - 175 2019

    ISSN  04708105

    　View Summary

    © 2019 by The Japan Neurosurgical Society. Cranioplasty following decompressive craniectomy is highly associated with complications. Methods for avoiding these complications have been well-documented; however, approaching reconstruction through the previous incision, especially if it was on or very near the bone defect, can sometimes lead to wound dehiscence and infection, with exposure of the artificial bone. For such complicated cases, we propose a multi-staged preparation that includes creating a delayed skin flap for the actual skull reconstruction. Flap was elevated in three stages, with 4 week intervals between each stage to allow for adequate blood supply. Cranioplasty using custom-made implants was then performed. Four patients (age range, 10-25 years) were prepared for skull reconstruction using this technique. During follow-up period for 12 months, no complications, including infections, exposure of the artificial bone, or flap necrosis, were observed. Despite the multiple stages required, we consider that our technique makes a significant contribution to the literature because it suggests a technique for cranioplasty following decompressive craniectomy that may avoid many of the complications following such cranioplasty using current methods.

  • Foreign-body reaction to bioabsorbable plate and screw in craniofacial surgery

    Kamata M., Sakamoto Y., Kishi K.

    Journal of Craniofacial Surgery （Journal of Craniofacial Surgery)  30 （ 1 ） E34 - E36 2019

    ISSN  10492275

    　View Summary

    Copyright © 2018 by Mutaz B. Habal, MD Hydroxyapatite and poly-L-lactide plates are often used for maxillofacial surgery. These plates take 3 to 4 years to resorb completely, leading to the possibility of a foreign-body reaction. A 20-year-old woman who developed a foreign-body reaction to the plates was reported. Based on review of the relevant literature, foreign-body reactions have often been reported with this plate. Long-term follow-up is warranted to evaluate patients using this plate in maxillofacial surgery.

  • Assessment of Bioabsorbable Hydroxyapatite for Secondary Bone Grafting in Unilateral Alveolar Clefts

    Sakamoto Y., Sakamoto T., Ishii T., Kishi K.

    Cleft Palate-Craniofacial Journal （Cleft Palate-Craniofacial Journal)  57 （ 1 ） 114 - 117 2019

    ISSN  10556656

    　View Summary

    © 2019, American Cleft Palate-Craniofacial Association. Purpose: To evaluate the utility and efficacy of bioabsorbable hydroxyapatite and collagen complex (HA/Col) for secondary bone grafting in unilateral alveolar clefts. Patients and Methods: Between 2015 and 2016, 21 patients with unilateral cleft lips and alveolar clefts were enrolled. In group I, a cancellous iliac bone graft was placed at the alveolar cleft (6 males, 5 females). In group II, a bioabsorbable HA/Col was placed at the alveolar cleft (4 males, 7 females). Results: The groups did not differ in age, cleft volume, or surgical duration. There was a significant difference in intraoperative blood loss between the 2 groups (6.7 ± 1.89 mL in group II vs 38.8 ± 9.73 mL in group I [P <.01]). The use of patient-controlled intravenous analgesia was also significantly lower in group II than in group I (2.2 ± 1.9 times vs 12.2 ± 4.4 times [P <.01]). Only 1 female in group II who had maxillary sinusitis did not achieve osteosynthesis. With the exception of this patient, the 12-month bone volumes in groups I and II were 0.567 ± 0.066 and 0.596 ± 0.073 mL, respectively, without significant difference (P =.18). Conclusion: Compared with an autogenous bone, bioabsorbable HA/Col significantly reduces postoperative pain. In addition, the use of HA/Col alone produced the same result as an autologous bone and is effective in filling the alveolar cleft.

  • Assessment of bioabsorbable hydroxyapatite for cranial defect in children

    Sakamoto Y., Miwa T., Yoshida K., Kishi K.

    Journal of Craniofacial Surgery （Journal of Craniofacial Surgery)  30 （ 1 ） E58 - E60 2019

    ISSN  10492275

    　View Summary

    Copyright © 2018 by Mutaz B. Habal, MD Purpose: To evaluate the utility and efficacy of bioabsorbable hydroxyapatite and collagen complex (HA/Col) for cranioplasty repair of cranial bone defects in children. Methods: Two patients (a 6-year-old male and 11-year-old female) with Treacher Collins syndrome received zygoma and orbital floor reconstruction using a full thickness of parietal bone. The bone grafts were taken from each patient’s parietal cranium. The right parietal cranial defect was repaired with autologous bone dust, and the left side was repaired with HA/Col in each patient. Computed tomography scans were taken immediately after and at 12 months following surgery. The osteosynthesis areas and thicknesses were measured using computer-aided engineering. Results: Both patients experienced no complications, including infection. In the 6- and 11-year-old patients, the extent of osteosynthesis for HA/Col was 92.2% and 89.4%, respectively; and for the autologous bone dust was 78.5% and 53.2%, respectively. Because of the small sample size, a significant difference could not be calculated; however, the percentage of osteosynthesis for HA/Col was higher than for the autologous bone dust. Conclusion: This study showed that HA/Col can be effectively used in cranial defects and can be considered an alternative graft material for cranial reconstruction.

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Papers, etc., Registered in KOARA 【 Display / hide 】

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Reviews, Commentaries, etc. 【 Display / hide 】

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Presentations 【 Display / hide 】

  • Plagiocephalyの病態メカニズムの一見解

    Sakamoto Yoshiaki

    第54回日本形成外科学会総会 (徳島) , 2011, Oral Presentation(general)

  • Plagiocephalyの頭蓋変形に蝶形鱗状縫合は関与しているか？：有限要素法を用いたPosterior Coronal Hemiringの検証

    Sakamoto Yoshiaki

    第54回日本形成外科学会総会 (徳島) , 2011, Oral Presentation(general)

  • 新しい内眼角形成術

    Sakamoto Yoshiaki

    第54回日本形成外科学会総会 (徳島) , 2011, Oral Presentation(general)

  • 抗生剤混入リン酸カルシウム骨ペーストの有用性の検討

    Sakamoto Yoshiaki

    第23回慶應形成外科学術同門会 (東京) , 2011, Oral Presentation(general)

  • 症候群性狭頭症に対する中顔面低形成の時期と術式

    Sakamoto Yoshiaki

    第７回　craniosynostosis研究会 (東京) , 2011, Oral Presentation(general)

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

  • 頭蓋縫合閉鎖に関わるメカノバイオロジーの解明

    2016.04
    -
    2020.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, 坂本　好昭, Grant-in-Aid for Young Scientists (B), Principal Investigator

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Awards 【 Display / hide 】

  • 日本頭蓋底外科学会　優秀論文賞

    2018.10, 日本頭蓋底外科学会

    Type of Award： Awards of National Conference, Council and Symposium

  • 日本小児外科学会金賞

    2012.06, 日本小児外科学会, 日本人の臍の成長とその形状変化

  • 日本形成外科学会学術奨励賞

    2012.04, 日本形成外科学会, MoD法　-頭蓋縫合早期癒合症に対する新たな骨延長法-

  • 第46回 日本小児外科学会　金賞

    Sakamoto Yoshiaki, 2009.06, 日本小児外科学会, 臍ヘルニアに対する我々の治療戦略

    Type of Award： Awards of National Conference, Council and Symposium

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Courses Taught 【 Display / hide 】

  • LECTURE SERIES, PLASTIC AND RECONSTRUCTIVE SURGERY

    2020

  • LECTURE SERIES, PLASTIC AND RECONSTRUCTIVE SURGERY

    2019

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Courses Previously Taught 【 Display / hide 】

  • 形成外科

    Keio University, 2015, Lecture

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Memberships in Academic Societies 【 Display / hide 】

  • 日本形成外科学会, 

    2005.04
    -
    Present

  • 日本頭蓋顎顔面外科学会, 

    2007.04
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    Present

  • 日本口蓋裂学会, 

    2007.04
    -
    Present

  • 日本形成外科手術手技学会, 

    2007.04
    -
    Present

  • 日本創傷治癒学会, 

    2012.04
    -
    Present

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Committee Experiences 【 Display / hide 】

  • 2019.10
    -
    Present

    日本形成外科学会 渉外・広報委員会委員, 日本形成外科学会

  • 2019.04
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    Present

    日本頭蓋顎顔面外科学会　学術委員, 日本頭蓋顎顔面外科学会

  • 2019.04
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    Present

    日本頭蓋顎顔面外科学会　会則検討委員, 日本頭蓋顎顔面外科学会

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