A Method to Determine the Mass Moment of Inertia for Living Subjects - Quick Release Method (proposed by Drillis and Contini)


Much of the anthropometric data is determined from studies performed on cadavers. To calculate the mass moment of inertia of a frozen body segment, hang from a pivot so that it is free to swing.



In order to measure the mass moment of inertia of a limb, follow the method described below:

Subject exerts a measured torque against a restraining strap.

Strap is released without warning.

Both exerted torque and angular acceleration of the limb, are measured.

Calculate the mass moment of inertia with the equation below.


This method would be easier applied to the upper and lower extremities.



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Support for the development of this module was provided by the National Science Foundation and The Cooper Union for the Advancement of Science and Art.

Please send questions or comments to Professor Ron Adrezin or Professor Daniel Raichel.