Thermovision-controlled Lumbar Sympathetic Blockade in Chronic Limb-threatening Ischemia Treatment

Who May Qualify: - Chronic limb-threatening ischemia-Patients with chronic leg pain for at least 6 months with intensity (VAS \>=5) - those who (only if a signature was obtainable), or whose legal guardian,fully understood the clinical trial -details and signed the willing to sign a consent form form Who Should NOT Join This Trial: - Chronic Venous Insufficiency - women with positive a pregnancy tests before the trial or who planned to become pregnant within the following 3 years - other patients viewed as inappropriate by the staff - disagreement with participation in the study Always talk to your doctor about whether this trial is right for you.