Developement of Prosthesis on Icy Road

Research Project

Project/Area Number	08557086
Research Category	Grant-in-Aid for Scientific Research (A)
Allocation Type	Single-year Grants
Section	展開研究
Research Field	Orthopaedic surgery
Research Institution	Sapporo Medical University
Principal Investigator	YOKOGUSI Kazutoshi Sapporo Medical University, Assistant Professor, 医学部, 助教授 (20145593)
Co-Investigator(Kenkyū-buntansha)	NARITA Hiroshi Sapporo Medical University, Assistant, 医学部, 助手 (30228093)
Project Period (FY)	1996 – 1998
Project Status	Completed (Fiscal Year 1998)
Budget Amount *help	¥11,800,000 (Direct Cost: ¥11,800,000) Fiscal Year 1998: ¥1,400,000 (Direct Cost: ¥1,400,000) Fiscal Year 1997: ¥3,200,000 (Direct Cost: ¥3,200,000) Fiscal Year 1996: ¥7,200,000 (Direct Cost: ¥7,200,000)
Keywords	artificial knee joint / above-knee prosthesis / gait analysis / icy road / 義足 / 義足膝継手 / Bouncing Knee / 歩行解析 / 歩容 / 下腿義足
Research Abstract	In the preliminary walking analysis of healthy people, the knee flexion angle in the stance phase on icy road was larger than that on non-icy road. This position maintains the center of gravity of the body in low position. On the other hand, in the walking of above-knee amputee on the icy road, the artificial knee joint in the market kept the extension position in the stance phase. We developed the artificial knee joint to be able to use both non-icy and icy road. It can keep the approximate flexion position in the stance phase with oil pressure cylinder, and has the mechanism of regulation in the swing phase with the air cylinder and micro-computer system.