Will this go away...?

For a couple of months I was slowly working on getting the outside leg hang. My biggest problem was that every time I gripped the pole behind my knee with serious intent, the lower front part of my leg (from the inside top of my ankle to about 10cm up) went dead. Now that I can do the outside leg hang, it's not such a big deal getting into the move, but it bothers me that this part of my leg feels like it's had a local anaesthetic. Anyone else had this? Will the sensation come back? thanks girls ~ x