Quite confusing. Knock-knee I think we would call X-legs and bow-leg I think O-legs, in non medical terms. I still try to figure out from which angle this problem should be looked at. With X the upper part of the legs are straight, but from the knee down they do not exactly curve out, but just go askew, no?
With bow-legs, do they curve out or rather curve in?
() = bow-legs? /\ = Knock-knee?