A method for evaluating bone comprising the steps of: (a) determining a bone pattern (i) by measuring the photodensity of an X-ray photograph from the long bone of a limb or (ii) by photon absorptiometry from the long bone of a limb; (b) smoothing and symmetrizing the bone pattern to modify the same;...http://www.google.se/patents/US4721112?utm_source=gb-gplus-sharePatent US4721112 - Bone evaluation method