Spinal Cord Stimulation for Intractable Chronic Limb Ischemia: A Narrative Review.

Area of Science:

• Vascular Surgery
• Neuromodulation
• Peripheral Arterial Disease Management

Background:

• Critical limb ischemia (CLI) represents the most severe stage of peripheral arterial disease (PAD), leading to significant morbidity, mortality, and reduced quality of life.
• CLI complications include severe limb pain, impaired mobility, ulcerations, and potential amputations.
• Current treatment options for CLI are limited, especially when surgical or endovascular revascularization is not feasible or has failed.

Purpose of the Study:

• To review the current evidence on spinal cord stimulation (SCS) as a treatment for CLI.
• To explore the surgical techniques, emerging SCS modalities, and mechanisms of action relevant to vascular diseases.
• To define patient selection criteria, clinical outcomes, and potential complications associated with SCS for CLI.

Main Methods:

• Systematic review of existing literature on SCS for CLI.
• Analysis of surgical approaches and technological advancements in SCS.
• Evaluation of studies investigating SCS mechanisms, patient selection, and clinical results.

Main Results:

• Spinal cord stimulation (SCS) is presented as a viable therapeutic option for selected CLI patients unresponsive to conventional treatments.
• The precise vasodilatory mechanisms of SCS in the peripheral microcirculation require further elucidation.
• Clinical outcomes data for SCS in CLI are variable, necessitating careful patient selection and further research.

Conclusions:

• Spinal cord stimulation (SCS) is a safe and effective surgical intervention for specific CLI patients ineligible for revascularization.
• Further research is needed to fully understand SCS's mechanism of action in vascular diseases and optimize its application in CLI.
• SCS offers a promising alternative for managing intractable pain and potentially improving limb salvage in advanced CLI.