Modelling and analysis of biological joints of a human arm in different movements

TL;DR

This paper models the complex biological joints of the human arm using CT data to analyze their kinematic behavior and movement range, aiding in design predictions.

Contribution

It introduces a detailed geometric modeling approach of human arm joints in CAD, preserving kinematic properties for analysis.

Findings

Joint geometries significantly influence movement range.

Mechanical approximation retains kinematic behavior.

Analysis under various loads informs design considerations.

Abstract

In the present work, irregular complex joints of the human arm are modelled in the computer-aided design environment. Accurately the geometric models of the joints and surrounding bony regions are developed from computed tomography data set and the range of movements are analysed. In this present work, biological joints are approximated into the mechanical joint without losing any kinematic behaviour and degrees of freedom. Then the analysis is done to determine the importance of joint geometries with different loading and boundary conditions. The present study helps to predict the behavior of joint configuration in the design stage.