Does the function of calcaneofibular ligament differ among individuals? : A functional analysis using cadavers

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K23307
• 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: Fukuoka International University of Health and Welfare
• Principal Investigator: YOSHIZUKA Hisayoshi 福岡国際医療福祉大学, 医療学部, 講師 (00879942)
• Project Period (FY): 2020-09-11 – 2022-03-31
• Keywords: 踵腓靭帯 / 足関節外側靭帯 / 肉眼解剖学 / 機能解剖学 / 臨床解剖学

Outline of Final Research Achievements

Functional analyses were performed using cadaveric specimens, inertial sensors, and a stretchable strain sensor to examine the functional significance of different running angles of calcaneofibular ligament (CFL). Thirty-three specimens showed varying CFL running angles ranging from 15° to 60°. The tensing behavior of the CFL was quantitatively measured using selected specimens with running angles of 20°, 30°, 40°, 50°, and 60° through accurate monitoring of the joint angles in three axes. Results showed that regardless of running angle, all CFLs tensed at dorsiflexion 20° and inversion 10°, and relaxed at eversion 10° and adduction 10°. However, in plantar flexion from 10° to 30°, the CFL with running angles of 20°, 30°, and 40° relaxed, while the CFL with running angles of 50° and 60° tensed. These results suggest that the function of CFL is affected by running angles and differs among individuals.

Free Research Field

肉眼解剖学

Academic Significance and Societal Importance of the Research Achievements

CFLの走行角度の違いが靭帯機能に影響を及ぼすことは、靭帯が制動できる関節運動が異なるだけでなく、靭帯損傷のリスクを高める肢位にも個体差が存在することを示唆する。この知見は、靭帯損傷メカニズムのさらなる理解、靭帯再建術、あるいは損傷予防のリハビリテーション医学に貢献する有用な基礎データとなり得るものと考えられる。