As the knee travels from medial to lateral before the knee, the numbness might be felt over the outer facet of the knee. It is recommended to apply pores and skin moisturiser for the numb location of your skin to avoid dryness and itch. For more information on knee replacement https://www.theorthopaedicandpainpractice.com/unlocking-the-mystery-of-knee-replacement-surgery-everything-you-need-to-know/