Biomechanical study of the subtalar joint using a three-dimensional robotic joint simulator

2016 Fiscal Year Final Research Report

• Project/Area Number: 25462345
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthopaedic surgery
• Research Institution: Sapporo Medical University
• Principal Investigator: watanabe kota 札幌医科大学, 保健医療学部, 教授 (50404629)
• Co-Investigator(Renkei-kenkyūsha): FUJIE Hiromichi 首都大学東京, システムデザイン学部, 教授 (20199300)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 生体工学 / 未固定人体標本 / 足関節 / 距骨下関節 / 関節安定性 / 靭帯再建術

Outline of Final Research Achievements

The purposes of this study were to investigate biomechanical characteristics of the subtalar joint and to develop a new ligament reconstruction procedure reproducing normal joint stability and kinematics. A three-dimensional robotic joint simulator was used to repeat joint motion in cadaveric foot specimens. The calcaneofibular ligament has a role to stabilize the subtalar joint. We acquired the data of in situ force and stabilizing contribution of the ligament during joint motion. Using the data we investigated appropriate initial tension of the grafted ligament to achieve normal hindfoot function. As a result, condition of 30 N of the initial tension reproduced joint stability and kinematics closest to the normal condition. These results will contribute to acquire better outcome following treatment of ankle ligament injury by understanding biomechanical characteristics of the ligament and improving operative procedures.

Free Research Field

整形外科