After surgery, it is natural to experience pain symptoms. The degree of pain is different for everyone. In addition to pain, you may feel stretching in the hollow/side of your knee. There is also a chance that your knee will be quite a bit swollen or blue in response to the surgery. Because incisions were made in the skin during surgery, you may find that the skin around the knee is extra sensitive or feels dull in some areas. This is perfectly normal. In most cases, sensation returns to normal; this may take up to 9 months after surgery.