Diabetic Foot, Causes, Risk Factors, and Clinical Evaluation
1. Diabetic Foot
Causes, Risk Factors and
Clinical Evaluation
Reference:
Satish Chandra Mishra et al. Diabetic foot. BMJ 2017; 359
David G. Armstrong et al. Diabetic Foot Ulcers and Their Recurrence. N Engl J
Med 2017; 376:2367-2375
Summarized By Yung-Tsai Chu
2. Pathway of Diabetic Foot Ulcer
Poor
Glycemic
Control
Neuropathy
Peripheral Artery Disease
Sensory
Motor
Autonomic
Loss of Protective Sensation
Less Sweating→ Dry Skin
Foot Deformity
Reference: David G. Armstrong et al. Diabetic Foot Ulcers and Their Recurrence.N Engl J Med 2017; 376:2367-2375
3. Risk Factors of Recurrence
High Vibration Threshold
Presence of Preulcerative Lesion
Presence of Peripheral Artery Disease
Presence of Osteomyelitis
Geriatric Depression Scale >= 10
CRP > 1.5mg/dL
HbA1c >7.5%
Reference: David G. Armstrong et al. Diabetic Foot Ulcers and Their Recurrence.N Engl J Med 2017; 376:2367-2375
4. Clinical Evaluation
Foot Examination
Reference: Satish Chandra Mishra et al. Diabetic foot. BMJ 2017; 359
General Assessment Signs of Sepsis Visibly Unwell, Drowsy, Fever etc.
Active Disease Ulcer, Rest Pain, Gangrene, Cellulitis
Temp and Color
Ischemia: Cold, Pale/Dusky
Acute Charcot Foot: Warm, Red or
Swollen
Nails, Callus, Maceration, Pes Cavus,
Skin Fissures, Claw/Hammer Toes,
Rocker Bottom Foot, Fungal Infection
Lesions or
Deformities
(DEF)
5. Clinical Evaluation
Foot Examination
Reference: Satish Chandra Mishra et al. Diabetic foot. BMJ 2017; 359
General Assessment Signs of Sepsis Visibly Unwell, Drowsy, Fever etc.
Active Disease Ulcer, Rest Pain, Gangrene, Cellulitis
Temp and Color
Ischemia: Cold, Pale/Dusky
Acute Charcot Foot: Warm, Red or
Swollen
Lesions or
Deformities
(DEF)
Nails, Callus, Maceration, Pes Cavus,
Skin Fissures, Claw/Hammer Toes,
Rocker Bottom Foot, Fungal Infection
Urgent Referral
6. Clinical Evaluation
Foot Examination
Loss of Protective Sensation
(LOPS)
Peripheral Artery Disease
(PAD)
Pinprick Monofilament
Vibration Tuning Fork
Reference: Satish Chandra Mishra et al. Diabetic foot. BMJ 2017; 359
General Assessment
History of Intermittent Claudication
Posterior Tibial Artery
Dorsalis Pedis Artery
Foot Pulses
Ankle-Brachial Index < 0.9
7. Risk Assessment and Referrals
Reference: Satish Chandra Mishra et al. Diabetic foot. BMJ 2017; 359
Presentation Management Follow-up
Low Risk Callus Alone
Patient Education
Glycemic Control, Foot care
Every Year
Medium Risk 1 of Followings:
Deformity, LOPS or PAD
Patient Education
Manage PAD
● Statin + Antiplatelet
● Exercise
● Vascular Intervention
Every
3-6 Months
High Risk
● Previous Amputation or
Ulceration
● 2 of Followings:
Deformity, LOPS or PAD
Diabetic Foot Center
Foot Protection Services
Surgical Management
Every
1-2 months