Inherent Kinematics of the Human Thumb IP and MCP Joints During Functional Tasks

IF 4.9 3区计算机科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Journal of Bionic Engineering Pub Date : 2024-12-09 DOI:10.1007/s42235-024-00617-0

Xinyan Zhou, Zhihui Qian, Kunyang Wang, Jianan Wu, Lei Ren, Guowu Wei, Luquan Ren

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引用次数: 0

Abstract

The human thumb plays a crucial role in performing coordinated hand movements for precise tool use. However, quantifying and interpreting the kinematics and couplings of the six degrees of freedom (6DOF) between the interphalangeal (IP) and metacarpophalangeal (MCP) joints during hand functional tasks remains challenging. To address this issue, advanced dynamic biplane radiography combined with a model-based 2D–3D tracking technique was employed to decode the inherent kinematics of the thumb IP and MCP joints during key pinch, tip pinch, palmar pinch and wide grasp. The results indicate that the functional tasks of the thumb are intricately modulated by the 3D rotational and translational motions of the IP and MCP joints. The IP joint exhibited the greatest flexion/extension range of motion during the tip pinch task (67.2° ± 8.4°), compared to smaller ranges in key pinch (27.6° ± 3.8°) and wide grasp (16.2° ± 7.1°) tasks. In the wide grasp task, the IP joint showed more movement in the radius/ulna direction (3.4 ± 1.2 mm) compared to tip pinch (3.1 ± 0.8 mm). Furthermore, the kinematic data of the IP joint challenge the traditional notion that the IP joint normally acts as a hinge mechanism. The results of this study help to elucidate the kinematics of human thumb IP and MCP joints and may provide new inspiration for the design of high-performance bionic hands or thumb prosthetics as well as for evaluating the outcomes of thumb therapeutic interventions and surgical procedures.

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人类拇指IP和MCP关节在功能性任务中的固有运动学

人类的拇指在进行精确的工具使用协调的手部运动中起着至关重要的作用。然而，在手部功能任务中，量化和解释指间关节（IP）和掌指关节（MCP）之间的六个自由度（6DOF）的运动学和耦合仍然具有挑战性。为了解决这一问题，采用先进的动态双翼x线摄影技术结合基于模型的2D-3D跟踪技术，对拇指IP和MCP关节在键捏、指尖捏、手掌捏和宽抓过程中的固有运动学进行解码。结果表明，拇指的功能任务是由IP和MCP关节的三维旋转和平移运动复杂地调节的。在指尖捏捏任务中，IP关节表现出最大的屈伸活动范围（67.2°±8.4°），而在键捏（27.6°±3.8°）和宽抓（16.2°±7.1°）任务中，IP关节的屈伸活动范围较小。在宽抓握任务中，与指尖捏握（3.1±0.8 mm）相比，IP关节在桡骨/尺骨方向上的运动（3.4±1.2 mm）更多。此外，IP关节的运动学数据挑战了IP关节通常作为铰链机构的传统观念。本研究结果有助于阐明人类拇指IP和MCP关节的运动学，并可能为高性能仿生手或拇指假肢的设计以及拇指治疗干预和外科手术的效果评估提供新的灵感。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Bionic Engineering 工程技术-材料科学：生物材料

CiteScore

7.10

自引率

10.00%

发文量

162

审稿时长

10.0 months

期刊介绍： The Journal of Bionic Engineering (JBE) is a peer-reviewed journal that publishes original research papers and reviews that apply the knowledge learned from nature and biological systems to solve concrete engineering problems. The topics that JBE covers include but are not limited to: Mechanisms, kinematical mechanics and control of animal locomotion, development of mobile robots with walking (running and crawling), swimming or flying abilities inspired by animal locomotion. Structures, morphologies, composition and physical properties of natural and biomaterials; fabrication of new materials mimicking the properties and functions of natural and biomaterials. Biomedical materials, artificial organs and tissue engineering for medical applications; rehabilitation equipment and devices. Development of bioinspired computation methods and artificial intelligence for engineering applications.