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