The only risks for HIV in adults are:
1) Having unprotected anal or vaginal sex, or
2) sharing intravenous needles with IV drug users.
You cannot get HIV from someone's leg or hands, or any other body part - NO MATTER WHAT.
Wound-to-wound contact refers to SEVERE wounds that would put you in the hospital emergency department. This would be like a major car crash with two people involved who had serious injuries. Obviously, this is VERY RARE, and the people involved would be less worried about HIV than they would be about just surviving.
If you do not engage in any of the activities I mentioned above with someone HIV+ or whose HIV status is unknown to you, you will NEVER have to worry about getting HIV. There is no information you could add about this event that would make it a risk for HIV.