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Table 2 The University of Texas risk classification system (adapted from [17])

From: The foot-health of people with diabetes in a regional Australian population: a prospective clinical audit

0 No neuropathy 1 Peripheral neuropathy 2 Neuropathy with deformity 3 History of pathology
Sensation intact: 10 g monofilament detectable or vibratory perception threshold < 25 volts Vascular status intact: Ankle brachial index > 0.8, toe systolic pressure > 45 mmHg No history of neuropathic ulceration or Charcot neuropathic osteoarthropathy. Foot deformity may be present Loss of protective sensation: 10 g monofilament not detectable or vibratory perception threshold > 25 volts Vascular status intact No history of neuropathic ulceration or Charcot neuropathic osteoarthropathy. No foot deformity Loss of protective sensation Vascular status intact No history of neuropathic ulceration or Charcot neuropathic osteoarthropathy. Foot deformity present Loss of protective sensation Vascular status intact History of neuropathic ulceration or Charcot neuropathic osteoarthropathy
4A Neuropathic ulceration 4B Acute Charcot arthropathy 5 Infected foot 6 Ischaemia
Loss of protective sensation Vascular status intact Non-infected neuropathic ulceration No acute Charcot neuropathic osteoarthropathy. Loss of protective sensation Vascular status intact Non-infected neuropathic ulceration may be present Acute Charcot neuropathic osteoarthropathy present Loss of protective sensation Vascular status intact Infected wound Charcot neuropathic osteoarthropathy may be present Sensation may or may not be intact Ankle brachial Index < 0.8 or toe systolic pressure < 45 mmHg Ulceration may be present