Hypersensitivity Nerves After Knee Replacement

I am 10 weeks post op after my left knee replacement and only 90 degrees of range of motion. I have been in physical therapy 3 times a week but still major scare tissue of which is limiting my ROM. I have gone through a knee manipulation to break off scare tissue but no luck and need to be scoped to remove such scare tissue. The reason for not moving forward to the scope is that I have major swelling, hypersensitive nerves, fever on the knee and major pitting edema. I have been tested to make sure of no infections going on as well as tested for CRPS or RSD....both coming back negitive. The Doctor refuses to move forward with scope until the current trauma is under control. They looked at using a procedure called "COOLIEF" but do not think that I would able to make it through the procedure due to the needles injected into my knee and my current hypersensitive nerves over the top of my knee. In the mean time they suggested to start a med called Gabapentin to help control the nerves. I have been off work for 10+ weeks and hoping the new meds will kick in the next couple weeks then 4 more weeks of down time for the scope to remove scare tissue and recovery. Just reaching out to see if anyone has experienced such post surgery issues that I am encountering from knee replacement. Thought and suggestions are much appreciative!