1. Anatomy of the foot intrinsic muscles 2. Biomechanics of the foot intrinsic muscles 3. Anatomy of the lower leg extrinsic muscles 4. Biomechanics of the lower leg extrinsic muscles 5. Physiology of the skeletal muscles (in general) 6. Mechanism (Pathophysiology) of diabetic foot myopathies 7. Epidemiology (global incidence) of diabetic foot myopathies 8. The Myotendinous Junction: definition, infrastructure 9. Concept of diabetic tendino-myopathy 10. Muscular edema in the diabetic foot Differential diagnosis of muscular edema 11. Muscular atrophy (amyotrophy)in the diabetic foot 12. Muscular infection (pyogenic myositis) 13. Vascular supply to the intrinsic and extrinsic muscles Pathology: muscular infarction / necrosis 14. Innervation of the intrinsic and extrinsic foot muscles Pathology: muscular denervation 15. Imaging of the diabetic myopathies (1): Radiography and Computed Tomography 16. Imaging of the diabetic foot myopathies (2): Ultrasonography 17. Imaging of the diabetic foot myopathies (3): Magnetic Resonance Imaging (MRI) 18. Diabetic foot myopathies: associated soft tissues lesions a (tendinopathies, fasciitis, cellulitis, ulcerations, sinus tract) 19. Diabetic foot myopathies: associated bony lesions (edema, necrosis, infection, fracture, dislocation) 20. Diabetic myopathies: biopsy and pathological evidence 21. Clinical diagnosis and non-surgical management of diabetic myopathies 22. Surgical management of diabetic foot myopathies and tendinopathies 23. COVID-19 and Diabetic Myopathies