[Galadriel55]

There is a word that is someties applied to both "leg" and"foot" (together), although that's not the correct use (for example, you can say "my leg is stuck" but mean "my foot is stuck"). I am quite sure both terms existed for a long while. Maybe the translator used the "general leg" term instead of the specific foot term, which made the artist think it was really the leg, and draw Bilbo like that...