I'm sure that Walmart would sell them.
I read that hernia could easily result from an accident. If someone were to suffer a fall on his feet, that could well result in a hernia. The most common form of hernia, that of the groin in men, usually is brought on by straining, as when straining to have a bowel movement or trying to lift some heavy object in an injudicious manner. It is called an “inguinal” hernia. The basic cause according to most authorities is an inherited or congenital weakness of the abdominal or other muscles. This seems to appear from the fact that hernias at times run in families.