[Closed] Knee Issue

Had an "off" from teh MTB a few months ago.
Couple of scrapes on side of both knees.

On right leg, have a kind of numb area to the right and below kneecap, though the impact was to the left of kneecap. Also, I have a rather sensitive spot now beside the impact point, such that when I touch it gently, the feeling is like a hot needle being stuck into my leg, but bizarely the sensation of the needle is coming from the slightly numb area, away from where I touch.

Any idea's? I am thinking some kind of trapped nerve?