Diagnostic blockade and radiofrequency ablation neurotomy of the three genicular nerves in the knee is performed for the treatment of chronic knee pain when other treatment options have failed. This treatment does not fix the underlying condition causing the pain, but rather prevents the pain signal from reaching the brain. First each nerve is tested by placing a small amount of numbing medication on each nerve and tracking the pain relief for the following eight hours. If the diagnostic block is successful, those same nerves are treated with radiofrequency ablation neurotomy. Radiofrequency ablation neurotomy is performed using a small probe that heats the nerve tissue just enough to remove a small section of the nerve. Once the nerve tissue is removed, the nerve is unable to send pain signals to the brain.