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Table 1 The University of Texas Diabetic Foot Risk Classification System (adapted from [14])

From: Identifying type 2 diabetes risk classification systems and recommendations for review of podiatric care in an Australian Aboriginal health clinic

Category 0: Minimal Pathology Category 1: Insensate Foot Category 2: Insensate Foot with Deformity Category 3: Demonstrated Pathology
NO Neuropathy Neuropathy NO Deformity Neuropathy with Deformity History of Pathology
 • Patient diagnosed with diabetes mellitus.  • Patient diagnosed with diabetes mellitus.  • Patient diagnosed with diabetes mellitus.  • Patient diagnosed with diabetes mellitus.
 • Protective sensation intact (Semmes-Weinstein 10g monofilament detectable).  • Protective sensation absent (Semmes-Weinstein 10g monofilament NOT detectable).  • Protective sensation absent.  • Protective sensation.
 • Ankle brachial index of >0.8 and toe systolic pressure of >45mmHg.  • Ankle brachial index of >0.8 and toe systolic pressure of >45mmHg.  • Ankle brachial index of >0.8 and toe systolic pressure of >45mmHg.  Ankle brachial index of >0.8 and toe systolic pressure of >45mmHg.
 • Foot deformity may be present.  • No history of ulceration.  • No history of ulceration.  • History of neuropathic ulceration.
 • No history of ulceration.  No history of Charcot’s joint.  • No history of Charcot’s joint.  • History of Charcot’s joint.
   No foot deformity.  • Foot deformity present.  • Foot deformity present.
Category 4A: Neuropathic Ulcer Category 4B: Acute Charcot’s Joint Category 5: Infected Diabetic Foot Category 6: Dysvascular
Neuropathic Wound Acute Charcot’s Joint Infected Diabetic Foot Foot Ischaemic Limb
 • Patient diagnosed with diabetes mellitus.  • Patient diagnosed with diabetes mellitus.  • Patient diagnosed with diabetes mellitus.  • Patient diagnosed with diabetes mellitus.
 • Protective sensation may or may not be intact.  • Protective sensation absent.  • Protective sensation may or may not be intact.  • Protective sensation may or may not be intact.
 • Ankle brachial index of >0.8 and toe systolic pressure of >45mmHg.  • Ankle brachial index of >0.8 and toe systolic pressure of >45mmHg.  • Infected wound.  • Ankle brachial index of <0.8 and toe systolic pressure of <45mmHg.
 • Foot deformity normally present.  • Non-infected neuropathic ulceration may be present.  • Charcot’s joint may be present.  • Ulceration may be present.
 • Non-infected neuropathic ulceration.  • Charcot’s joint present.   
 • No Charcot’s joint present.