Chronic ischemic monomelic neuropathy from critical limb ischemia

Area of Science:

• Neurology
• Vascular Medicine
• Genetics

Background:

• Chronic and critical leg ischemia can lead to significant peripheral nerve dysfunction.
• Understanding the specific neuropathic changes is crucial for patient management and treatment development.

Purpose of the Study:

• To characterize the peripheral neuropathy associated with chronic and critical arterial leg ischemia.
• To explore the relationship between ischemia severity and neurological deficits.

Main Methods:

• Evaluated 19 patients undergoing gene therapy for leg ischemia.
• Utilized medical history, neurological examinations, nerve conduction studies, and quantitative sensory testing.
• Compared the affected ischemic leg with the less affected contralateral limb.

Main Results:

• A majority of patients exhibited neuropathic symptoms like pain, numbness, and paresthesias.
• Neurological examination and nerve conduction studies revealed significant abnormalities in the ischemic leg, particularly sensory deficits.
• Reduced sural sensory potentials and tibial motor amplitudes were observed, indicating distal axonopathy.

Conclusions:

• Chronic and critical limb ischemia is associated with a predominantly sensory neuropathy.
• The neurophysiologic findings suggest a distal axonopathy as the underlying pathology.
• Leg blood flow correlates with the severity of neurological symptoms and electrophysiologic changes.