ED Erika und Heinz Kalscheuer Wiesenstraße 17 · 50374 Erftstadt Tel:0 22 35 / 85511 · Fax: 0 22 35 / 86390 ED = elbow dysplasia Hereditary disease of the elbow. For a few years it has been possible in the St. Bernard Club to x-ray ED voluntary. The results of the x-rayed dogs show that no no-breeding precaution are necessary at the moment.