northeast Spain. The Fourier procedure used appeared well repeatable. Elliptic Fourier descriptors of one harmonic successfully captured most of the navicular morphology, whereas a larger number of harmonics would not have increased the information, but would have produced noise. The method described in the present study allows a sensible analysis of the morphology characteristics of the equine navicular bone. It could be extended to other breeds, as well as to horses affected by foot problems; and also it could be proposed for longitudinal evaluations if obtaining images in vivo (i.e. ecography) were standardised.