Improvement of human body fixation and preservation method for cadaveric surgical training

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K09093
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 55010:General surgery and pediatric surgery-related
• Research Institution: Okayama University
• Principal Investigator: OHTSUKA Aiji 岡山大学, 医歯薬学総合研究科, 特命教授 (50168986)
• Co-Investigator(Kenkyū-buntansha): 品岡 玲 岡山大学, 大学病院, 助教 (90724500)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 遺体手術手技研修 / CST / 防腐固定処置 / 低濃度ホルマリン / ホルムアルデヒド

Outline of Final Research Achievements

The purpose of this study is to establish a low-concentration formalin fixation method for low-cost embalming of autopsy bodies with a safe and lifelike feel suitable for cadaveric surgical training (CST). After receiving the cadaver, 20% propylene glycol was perfused, followed by rigor mortis release massage 12-24 hours later, and 5% formalin/20%propylene glycol was perfused. Joint range of motion was 70-90° or greater at the shoulder joint and hip joint, allowing flexibility to withstand the use of CST. Brain tissue was found to be insufficient in fixation, which could be addressed by injecting additional 10% formalin into the cervical subarachnoid space. The embalmed cadavers could thus be safely used for CST and for regular student dissection lab course.

Free Research Field

解剖学一般

Academic Significance and Societal Importance of the Research Achievements

遺体手術手技研修（CST）は、高度化し難度の高い医療手技を安全安心に国民に提供することに貢献するもので、近年その重要性が注目されている。本研究は、CSTを安全かつ低コストで行うことのできる解剖体防腐固定法を開発したものである。これにより、コストの高い防腐処置法や新鮮遺体の使用を限定的にすることができ、CSTをさらに普及させる効果がある。また、通常の学生の解剖実習の解剖体もこの方法で防腐処置できるので、CSTと解剖実習の解剖体の配分が容易となる。