Use of bisphosphonic acid derivatives for preparing a medicine for treating lameness

Use of a bisphosphonic acid derivative of formula: wherein R1 represents a hydrogen atom, a halogen atom, a hydroxyl, an amino, a mono (C1-C4) alkylamino, di (C1-C4) amino; R2 represents a halogen atom, a linear alkyl comprising from 1 to 5 carbon atoms unsubstituted or substituted by a group selected from a chlorine atom, a hydroxyl, amino, monoalkyl (C1-C4) alkylamino, di (C1-C4) amino; a cycloalkyl (C3-C7) amino, or R2 represents a phenoxy, a phenyl, a thiol, a phenylthio a chlorophenylthio, a pyridyl, one pyridylmethyl a 1-pyridyl 1-hydroxymethyl, one imidazolylmethyl a thiomorpholin-4-yl . of a pharmaceutically acceptable salt thereof or a hydrate thereof in the preparation of a medicament for the treatment of lameness displayed with osteoarthritis, the osteocondriosis or enthesopathies of bone insertions of tendons, ligaments or the aponeurosis of the animal does not suffer or arthritis or fractures or exostosis.