5.4 Diabetic Foot

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  • Most common cause of non-traumatic amputation is diabetic foot, which is preventable and treatable.
  • Comprehensive foot evaluation should be done initially and at least annually to identify risk factors for ulcers and amputations.
  • Individuals with sensory loss or prior ulceration or amputation should have their feet examined at every visit.

 

5.4.1 History

  • Prior history of ulceration, amputation, Charcot foot, angioplasty or vascular surgery, cigarette smoking, retinopathy.
  • Current symptoms of neuropathy (pain, burning, numbness) and vascular disease (fatigue, claudication).

5.4.2 Examination

  • Inspection of the skin
  • Assessment of foot deformities
  • Neurological assessment: 10-g monofilament testing with at least one other assessment: pinprick, temperature, vibration
  • Vascular assessment: pulses in the legs and feet. With symptoms of claudication or decreased or absent pedal pulses: ankle-brachial index, further vascular assessment as appropriate e.g. doppler study.

Table 5.3 Risk categories of diabetic foot:5

Table 5.3 Risk categories of diabetic foot

5.4.3 Management

  • A multidisciplinary approach is recommended.
  • Provide general preventive foot self-care education to all individuals with diabetes.
  • Specialized therapeutic footwear is recommended for high-risk persons with diabetes including those with severe neuropathy, foot deformities, or history of amputation.

Do’s and don’ts for people at risk of diabetic foot

Do’s

  • Check feet daily for cuts, blisters, colour changes, swelling, ingrown toe nails. Use a mirror or take someone’s help if required
  • Always protect feet with appropriate footwear
  • Before wearing shoes check inside for nails, stones or any other sharp object
  • Wear socks with shoes; use cotton socks
  • Wash socks daily; make sure they have no holes
  • Buy new shoes at the end of the day
  • After washing, dry feet carefully especially between toes
  • Cut nails straight across and file the sharp edges
  • Annual foot examination by healthcare professional

Don’ts

  • Avoid barefoot walking
  • Avoid tight or torn shoes with rough and uneven edges
  • Avoid shoes with narrow toe box, high heels or footwear that have no back supports
  • Don’t use socks with tight top or rough sim
  • Don’t use hot water to wash feet
  • Don’t let the feet dry and cracked
  • Don’t use corn medicine or blades to remove it by self

5.4.4 Referral criteria to foot care specialists

  • History of prior lower-extremity complications
  • Loss of protective sensation
  • Structural abnormalities of foot
  • Peripheral arterial disease
  • Presence of ulcer, gangrene or infection