The purpose of this article is to evaluate the spatio-temporal parameters of an amputee versus a healthy patient, since it is a way of recognizing the failures and observations of the gait cycle as a result of the state of the prosthesis.For this study it is necessary to deepen the biomechanics of the lower extremities by investigating the similarity that exists between a prosthesis and the biological part of the amputated joint.The acquired data were taken from the sagittal and frontal plane, in an orthopedic and rehabilitation center for both types of patients (Transtibial Amputee and Person with intact extremities), these data were processed using inertial sensors of TechnNaid® equipment and taken to a MarchaHumanaET software, which provides the values of the spatio-temporal gait parameters for each subject.