There's ricketts and then there is carpal subluxating syndrome which can be mistaken for one another. CSS is genetic although it may not appear in all of the offsprings. This is commonly seen in toy breeds and German Shepherds as well as Bulldogs and Dachchunds. I believe Shorty Cowboy had this leg deformity although it may not necessarily make the dog a less game one or talented one. Some people refer to it as east-west.