Benazir S¹*,, Manoj Abraham²and Kannan²

¹Professor, Department of Physiotherapy, The Tamil Nadu Dr. M.G.R. Medical University, Tamilnadu, India
²Principal, Department of Physiotherapy, The Tamil Nadu Dr. M.G.R. Medical University, Tamilnadu, India

*Corresponding Author: Benazir S, Professor, Department of Physiotherapy, The Tamil Nadu Dr. M.G.R. Medical University, Tamilnadu, India.

Received: August 03, 2026; Published: August 25, 2026

Abstract

Diabetic foot syndrome is a severe incapacitating consequence of diabetes mellitus, emerging from a complex interplay of vascular insufficiency, biomechanical stress, infection, and peripheral neuropathy. Historically, clinical focus has heavily favoured sensory nerve degradation, as the loss of protective pain perception allows repeated micro-traumas to go unnoticed. However, motor neuropathy remains a critically underappreciated yet plays an equal role as destructive catalyst in the ulceration cascade. The insidious denervation and subsequent neurogenic atrophy of the foot’s intrinsic musculature—specifically the lumbricals, interossei, and short flexors—disrupt the delicate balance between flexor and extensor muscle groups. This structural deterioration directly precipitates severe architectural abnormalities of foot, including pes cavus, claw-toe, and hammer-toe deformities. Consequently, natural gait mechanics and dynamic balance are compromised, forcing abnormal plantar pressure onto vulnerable areas like the metatarsal heads and the apex of the great toe. These mechanical shifts create an ideal environment for reactive hyperkeratosis (callus formation), subcutaneous haemorrhage, and inevitable full-thickness epidermal breakdown. This comprehensive narrative review explores the underlying cellular mechanisms and clinical trajectory of motor diabetic neuropathy. It highlights the importance of early diagnostic modalities, transitioning from bedside clinical signs such as impaired heel-walking and absent calcaneal reflexes to advanced assessments like nerve conduction studies (NCS) and quantitative pedobarographic (plantar pressure mapping). Furthermore, the review evaluates established wound grading frameworks, including the Wagner, University of Texas, and PEDIS classification systems, which guide systematic therapeutic interventions. Crucially, this analysis underscores the profound efficacy of proactive, rehabilitation-focused management strategies delivered through a multidisciplinary framework. Instead of relying solely on reactive wound care, evidence heavily supports early biomechanical interventions. The integration of rigorous off-loading techniques such as Total Contact Casting (TCC), targeted physiotherapy, progressive resistance training, and gait re-education is paramount. By addressing the root biomechanical imbalances caused by motor nerve damage, structured team-based care can successfully halt the cycle of chronic ulcer recurrence, preserve lower-limb function, and drastically minimise the incidence of preventable non-traumatic amputations.

Keywords: Diabetic Foot; Motor Neuropathy; Plantar Pressure; Off-Loading; Multidisciplinary Rehabilitation; Intrinsic Muscle Atrophy; Gait Dysfunction

References

1. Armstrong David G., et al. "Diabetic Foot Ulcers and Their Recurrence”. The New England Journal of Medicine 24 (2017): 2367-2375.
2. Singh N., et al. "Preventing Foot Ulcers in Patients with Diabetes”. JAMA2 (2005): 217-228.
3. Boulton Andrew JM., et al. "The Global Burden of Diabetic Foot Disease”. The Lancet9498 (2005): 1719-1724.
4. Bowker John H and Michael A Pfeifer. “Levin and O'Neal's The Diabetic Foot”. 7^th, Mosby/Elsevier (2008).
5. Armstrong David G., et al. "Five-Year Mortality and Direct Costs of Care for People with Diabetic Foot Complications Are Comparable to Cancer”. Journal of Foot and Ankle Research1 (2020): 16.
6. Boulton Andrew JM. "The Diabetic Foot”. Endotext, edited by Kenneth R. Feingold et al., MDText.com, Inc. (2000).
7. Bus Sicco A and Jaap J van Netten. "A Shift in Priority in Diabetic Foot Care and Research: 75% of Foot Ulcers Are Preventable”. Diabetes/Metabolism Research and Reviews1 (2016): 195-200.
8. Pendsey S P. "Understanding Diabetic Feet”. International Journal of Diabetes in Developing Countries2 (2010): 75-79.
9. Tesfaye Solomon., et al. "Diabetic Neuropathies: Update on Definitions, Diagnostic Criteria, Estimation of Severity, and Treatments”. Diabetes Care10 (2010): 2285-2293.
10. Dyck Peter J., et al. "The Prevalence by Staged Severity of Various Types of Diabetic Neuropathy”. Neurology 4 (1993): 817-824.
11. Kluding Patricia M., et al. "The Effect of Exercise on Neuropathic Symptoms, Nerve Function, and Cutaneous Innervation in People with Diabetic Peripheral Neuropathy”. Journal of Diabetes and Its Complications5 (2012): 424-429.
12. Feldman Eva L., et al. "Diabetic Neuropathy”. Nature Reviews Disease Primers1 (2019): 41.
13. Hingorani Anil., et al. "The Management of Diabetic Foot: A Clinical Practice Guideline”. Journal of Vascular Surgery2 (2016): 3S-21S.
14. Andersen Henning. "Motor Dysfunction in Diabetes”. Diabetes/Metabolism Research and Reviews1 (2012): 89-92.
15. Bus Sicco A., et al. "Intrinsic Muscle Atrophy and Toe Deformity in the Diabetic Neuropathic Foot”. Diabetes Care8 (2002): 1444-1450.
16. Wrobel James S and Bijan Najafi. "Diabetic Foot Biomechanics and Gait Dysfunction”. Journal of Diabetes Science and Technology4 (2010): 833-845.
17. Edmonds Michael E. "The Diabetic Foot: Pathophysiology and Treatment”. Clinical Endocrinology and Metabolism 4 (1986): 889-916.
18. Edmonds Michael E and AVM. Foster. "ABC of Wound Healing: Diabetic Foot Ulcers”. BMJ 7538 (2006): 407-410.
19. Murray H J., et al. "The Association between Callus Formation, High Pressures and Neuropathy in Diabetic Foot Ulceration”. Diabetic Medicine11 (1996): 979-982.
20. Pitei D L., et al. "The Effect of Regular Callus Removal on Foot Pressures”. Diabetic Medicine7 (1999): 618-620.
21. Wagner F W Jr. "The Dysvascular Foot: A System for Diagnosis and Treatment”. Foot and Ankle2 (1981): 64-122.
22. Armstrong David G., et al. "Validation of a Diabetic Wound Classification System: The Contribution of Depth, Infection, and Ischaemia to Risk of Amputation”. Diabetes Care5 (1998): 855-859.
23. Schaper Nicolaas C. "Diabetic Foot Ulcer Classification System for Research Purposes: A Progress Report”. Diabetes/Metabolism Research and Reviews1 (2004): S90-S95.
24. Lipsky Benjamin A., et al. "2012 Infectious Diseases Society of America Clinical Practice Guideline for the Diagnosis and Treatment of Diabetic Foot Infections”. Clinical Infectious Diseases12 (2012): e132-e173.
25. Kalani M., et al. "Transcutaneous Oxygen Tension and Toe Blood Pressure as Predictors for Outcome of Diabetic Foot Ulcers”. Diabetes Care1 (1999): 147-151.
26. Bus Sicco A., et al. "Offloading the Diabetic Foot: The Evolution of Total Contact Casts”. Diabetes/Metabolism Research and Reviews1 (2016): 119-130.
27. Prompers L., et al. "Prediction of Outcome in Individuals with Diabetic Foot Ulcers: Focus on the Differences between Individuals with and without Peripheral Arterial Disease. The EURODIALE Study”. Diabetologia5 (2008): 747-755.
28. Krishnan S., et al. "Reduction in Diabetic Amputations over 11 Years in a Defined U.K. Population: Benefits of Multidisciplinary Teamwork and Continuous Prospective Audit”. Diabetes Care1 (2008): 99-101.
29. Rubio José A., et al. "Reducing Major Lower-Extremity Amputations after the Introduction of a Multidisciplinary Team for the Diabetic Foot”. International Journal of Lower Extremity Wounds1 (2014): 22-26.

Citation

Citation: Benazir S., et al. “Motor Diabetic Neuropathy and the Diabetic Foot: Pathophysiology, Clinical Features, and the Role of Multidisciplinary Rehabilitation-A Narrative Review". Acta Scientific Neurology 9.9 (2026): 01-12.

Copyright

Copyright: ©2026 Benazir S., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.