Development of a versatile inter-component compressive force measurement sensor and elucidation of adequate soft tissue balancing in total knee arthroplasty

2022 Fiscal Year Final Research Report

• Project/Area Number: 17K10989
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthopaedic surgery
• Research Institution: Osaka Medical and Pharmaceutical University
• Principal Investigator: Okamoto Yoshinori 大阪医科薬科大学, 医学部, 講師 (30720180)
• Project Period (FY): 2017-04-01 – 2023-03-31
• Keywords: 人工関節 / 圧縮力 / 膝関節

Outline of Final Research Achievements

This study aimed to investigate the differences in tibiofemoral compressive force (TFCF) between 0° and 90°, and 90° and 0° flexion during knee motion in total knee arthroplasty (TKA) using a novel sensor. Although sensor technology that recognizes tibiofemoral force, contact points, and trajectory has been developed, no study has investigated TFCF dynamically during knee motion. We believe that our study makes a significant contribution because this is the first study to investigate the TFCF dynamically during knee motion in sensor-guided total knee arthroplasty. Further, we believe that the dynamic TFCF analysis during knee motion can contribute to further elucidation of intraoperative soft tissue balance in cruciate-retaining TKA.

Free Research Field

整形外科

Academic Significance and Societal Importance of the Research Achievements

超高齢社会に向かい人工膝関節全置換術（以下TKA）の需要は益々高まり、その手技は洗練され確立しつつあるにも関わらず、術中の至適軟部バランスについては未だ議論の余地を残す。大腿脛骨部品間に生じる圧縮力に着目し、0度から屈曲90度の範囲に於ける軟部バランスの連続的定量による評価を目指した圧縮力計測センサを考案し、今まで経験あるいは定性的に行われてきた軟部バランスの定量的評価が可能となった。この成果は術中の動的解析を兼ねた支援の一助としても応用でき、TKAの治療成績の向上に繋がる可能性が高く、大変意義深いと考える。