Are chemical lumbar sympathectomies an effective last-resort option to treat patients with critical limb ischaemia when alternative options such as the use of analgesia and surgical approaches to achieve perfusion of the lower limb have failed and amputation is indicated?

Project Protocol: Audit and Data Collection for Lumbar Sympathectomies for Non-reconstructable Ischaemic Limb Pain

Are chemical lumbar sympathectomies an effective last-resort option to treat patients with critical limb ischaemia when alternative options such as the use of analgesia and surgical approaches to achieve perfusion of the lower limb have failed and amputation is indicated?