Given that the knee travels from medial to lateral in front of the knee, the numbness is going to be felt to the outer facet of the knee. It can be advisable to use pores and skin moisturiser to your numb spot in the skin to prevent dryness and itch. https://www.theorthopaedicandpainpractice.com/unlocking-the-mystery-of-knee-replacement-surgery-everything-you-need-to-know/