ADVANCES IN UPPER LIMB MODELLING: IMPLICATIONS FOR TESTING CRICKET BOWLING ACTIONS

  • Jacquline Alderson
  • Amity Campbell
  • Aaron Chin
  • David Lloyd
  • Bruce Elliott
Keywords: glenohumeral joint location, elbow angle, cricket bowling.

Abstract

This study investigates the effect of glenohumeral joint centre (GHJ) mislocation on elbow flexion-extension kinematics and outlines the development and validation of functionally based 2DoF upper-limb model that is proposed to more accurately measure elbow flexion-extension angles. The findings suggest that a new regression equation be adopted to calculate the GHJ centre used in the definition of the upper arm anatomical coordinate system. The research also proposes that a 2DoF mean finite helical axis model (HAM) be used to describe upper limb motion as it more accurately measures flexion-extension angles when compared with traditional anatomically based models as validated against a mechanical arm moving through known ranges and angles. The HAM model also eliminated cross-talk on elbow flexion-extension kinematics.