Tomographic localization of motion axes.

Abstract

Localization of motion axes within joints and junctures in living humans has been carried out by means of roentgen stereophotogrammetry. Another technique is presented here, in which the localization of the axis is carried out by means of tomography. The field of application for this technique has been examined in a series of phantom experiments. It may be employed in certain situations where roentgen stereophotogrammetry is not useful. No other equipment is needed than a pluridirectional tomograph and conventional dark-room facilities.