ムラガキ　ヨシヒロ   MURAGAKI Yoshihiro   村垣　善浩    所属   医学部 医学科（東京女子医科大学病院）    職種   客員教授
言語種別	英語
発表タイトル	Improvement of Intraoperative plantar pressure measuring system considering physiological loadcondition
会議名	CARS 2019 – 33rd International Congress and Exhibition
学会区分	国際学会及び海外の学会
発表形式	ポスター掲示
講演区分	一般
発表者・共同発表者	SAKUMA, Ichiro, HOSOI Izumi, KOBAYASHI Etsuko, CHANG,S. S. H. , MAYSUMOTO Tomoyuki, AN Q., ANZAI E, OHTA Y.
発表年月日	2019/06/20
開催地 （都市, 国名）	Rennes, France
学会抄録	CARS 2019 21(4) 2019 CARS 2019 – 33rd International Congress and Exhibition
概要	Purpose Foot deformities such as hallux valgus and flatfoot are common problems that may require surgeries. The ideal foot shape must be reconstructed in three dimensional (3D) orientation by adjusting bones and soft tissues appropriately; otherwise, new foot problems will be brought postoperatively as typified by transfer metatarsalgia after hallux valgus surgery [1]. The types and amounts of bony or soft tissue correction could be based on returning plantar pressures pattern of known appropriate one. To evaluate correction, measurement of plantar pressure in vertical posture is required. However, it is difficult to estimate plantar pressure in standing posture during surgery since the patient is in a supine position under anesthesia. We have proposed a surgical assistance device that can measure plantar pressure under physiological load state of the bones as if the patient is in the standing posture during surgery (Intraoperative Plantar Pressure Measurement (IPPM) device) [2]. We constructed a system to guide an operator to align pushing plate on the patient foot in appropriate location and orientation using surgical navigation technology. It was demonstrated that the plantar pressure distribution can be reproduced similar to that in the standing posture under the condition where the floor reaction force passed near the center of the femoral head and the Center of Pressure (CoP) that is defined as centroid of the applied pressure on the foot was located similar to the CoP during the normal standing posture.