Legg-Calvé-Perthes Disease affects males approximately four to five times as often as females (4-5:1). LCPD has been shown to have hereditary components and does occur occasionally in Havanese. In the OFA data base, only 435 Havanese have been tested for LCPD. This is only approximately ¼ of Havanese tested for hip dysplasia. Of these, 99.8% are normal and only 0.2% are abnormal. These statistics would seem to indicate that the incidence of LCPD is quite low, however we do hear about it from time to time. It is very possible that the real incidence is higher than that.