When this occurs, acute pain is in most cases present, while in other cases it seems to cause but little if any inconvenience. Dogs past the middle age are usually the subjects, and obesity predisposes this condition. Dogs which have not been allowed to be bred are also so affected, but it occurs quite often in stud dogs as well, also due to injuries. In treating such cases try to remove the cause if you can so ascertain. If pain is present, hot fomentations should be applied and an aperient given.