title: Direct and indirect determination of tibial natural frequency--a comparison of frequency domain analysis and fast Fourier transform.
abstract: The natural frequency of in vivo mechanical systems has been derived in the past by signal conditioning techniques. For the living tibia the accuracy of this derived method was not validated. In addition the use of Fast Fourier Transform is time consuming, tedious and expensive. Direct measurement yields results which are more accurate, more easily obtained, and more clinically applicable.
mesh_terms: D001696:Biomechanical Phenomena; D001698:Biomedical Engineering; D005583:Fourier Analysis; D006801:Humans; D013977:Tibia / Q000502:physiology*; D014732:Vibration