The role of medial plantar nerve conduction studies in the diagnosis of diabetic polyneuropathy: A comparative analysis with sural nerve
Methods: Sixty patients with suspected diabetic polyneuropathy and 30 healthy controls were included. Diabetic neuropathy symptoms were assessed using the Diabetic Neuropathy Symptom (DNS) score. Sensory and motor nerve conduction studies, including median, ulnar, posterior tibial, medial plantar, and sural nerves, were performed.
Results: Sensory response amplitudes of both medial plantar and sural nerves were significantly lower in patients compared to controls. Abnormal sensory responses were detected in 23 (38.33%) patients for the sural nerve and 39 (65%) for the medial plantar nerve.
Conclusions: Both nerve conduction studies are valuable in diagnosing diabetic polyneuropathy, but medial plantar nerve conduction studies demonstrated higher sensitivity. Including medial plantar nerve assessments in routine evaluations may improve diagnostic accuracy.
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- Article Type Research Article
- Submitted February 21, 2026
- Published November 3, 2025
- Issue Vol. 11 No. 6 (2025)
- Section Research Article