Application of High-Frequency Spinal Cord Stimulation (HF-SCS) in the Treatment of Painful Diabetic Peripheral Neuropathy (PDPN): A multicenter, randomized controlled study comparing its clinical efficacy with traditional spinal cord stimulation for PDPN. The study aims to observe the impact of HF-SCS on the neurological function and microcirculation of PDPN patients, elucidating the correlation between the underlying diabetes and the efficacy of HF-SCS therapy on PDPN. The goal is to enhance the treatment standards for PDPN, improve the quality of life for this population, and overall treatment outcomes. Simultaneously, the study aims to contribute evidence-based medicine for the mechanistic exploration of PDPN.