Physiologic “Action at a Distance”: Neuromodulation, Neuroimmune Signaling, and Limb Preservation in Diabetic Foot Disease
Summary: This in-depth review synthesizes evidence on physiologic neuromodulation techniques that exert beneficial “action at a distance” for limb preservation in diabetic foot disease, CLTI, burns, and trauma. Modalities include high-frequency spinal cord stimulation (SCS; e.g., SENZA-PDN trial: 79% ≥50% pain relief, 62% neurological improvement), splenic peripheral focused ultrasound (pFUS; preclinical 75% faster wound closure via cholinergic anti-inflammatory pathway), remote ischemic conditioning (RIC; up to 75.6% healing vs 36.6% standard care), tibial transverse transport (TTT; 100% healing in ischemic/non-ischemic groups via neovascularization), and lateral tibial periosteum distraction (LTPD; improved ABI and pain). Despite differing entry points (neural, humoral, mechanical), they converge on enhanced microcirculation, angiogenesis, and immunomodulation. While promising, data are mostly early-phase; larger RCTs are needed for amputation-free survival and cost-effectiveness.
Key Highlights:
- SCS: 79% significant pain relief and sensory improvement in diabetic neuropathy
- pFUS and RIC: accelerated healing via anti-inflammatory and conditioning effects
- TTT/LTPD: robust neovascularization and 100% healing in select series
- Authors: Ahmed Sami Raihane, Gabriela Morales Deusch, Charles Liu, Bijan Najafi et al.
Keywords: neuromodulation limb preservation, spinal cord stimulation DFU, CLTI neuromodulation, Bijan Najafi