Diagnostic Criteria for Diabetic Sensorimotor Polyneuropathy (DSPN)

The Diabetic Sensorimotor Polyneuropathy (DSPN) is a symmetrical, length-dependent sensorimotor polyneuropathy attributable to metabolic and microvessel alterations as a result of chronic hyperglycemia exposure (diabetes) and cardiovascular risk covariates.
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Wagner and the University of Texas Wound Classification Systems of Diabetic Foot Ulcers

Wagner Classification of Diabetic Foot Ulcers

Grade 0: No ulcer in a high risk foot.

Grade 1: Superficial ulcer involving the full skin thickness but not underlying tissues.

Grade 2: Deep ulcer, penetrating down to ligaments and muscle, but no bone involvement or abscess formation.

Grade 3: Deep ulcer with cellulitis or abscess formation, often with osteomyelitis.

Grade 4: Localized gangrene.

Grade 5: Extensive gangrene involving the whole foot.

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