It is common to develop some numbness or change in sensation over the lateral or outer aspect of the incision after surgery. The normal skin nerves run from the inner aspect of the knee, rotating to the outer aspect of the knee. Generally, after 4 to 6 months, much of the skin sensation will return. However, in some patients, there is always a reduced degree of sensation over the outer aspect of the knee. Usually, the patients have little problem with this.