Effects of tibial plateau and meniscus geometry on biological knee joint motion

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K24295
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0909:Sports sciences, physical education, health sciences, and related fields
• Research Institution: Health Science University
• Principal Investigator: Endo Yusuke 健康科学大学, 健康科学部, 助教 (20850564)
• Project Period (FY): 2019-08-30 – 2022-03-31
• Keywords: 膝前十字靭帯損傷 / 脛骨後方傾斜角度 / 三次元動作分析 / 表面筋電図 / MRI画像診断装置

Outline of Final Research Achievements

The purpose of this study is to determine the effect of posterior tibial slope (PTS) angle on knee joint biomechanics. PTS angle was measured in 31 healthy subjects using an MR imaging system, and knee joint angles and lower limb electromyograms were measured during landing motion. PTS angle was significantly greater in women than in men, and a significant correlation was found between PTS angle and tibial rotation angle change in both genders. EMG analysis confirmed a significant regression relationship between lower extremity muscle activity and PTS angle in women. The present study provides insight into the influence of PTS angle on knee biomechanics.

Free Research Field

スポーツ科学

Academic Significance and Societal Importance of the Research Achievements

本研究は脛骨の解剖学的特徴と膝関節バイオメカニクスの関係を明らかにすることで、膝前十字靭帯(ACL)損傷の受傷メカニズムの解明に寄与することを目指した研究である。本研究によって、脛骨後方傾斜(PTS)角度はACL損傷を引き起こす脛骨内旋運動と関係することが明らかとなった。PTS角度の計測にはMRIなどの医療用画像が必要であるが、ACL損傷者は診断時に画像診断が行われている。このことから、PTS角度はACL再建術を実施した患者の再受傷の予防と親和性の高い指標であることが考えられる。