Diabetic Foot: Surgical Therapy

Notice: The most important measures are metabolic optimization and treatment of internal diseases and infection control. The following measures should be performed/observed in the presence of diabetic foot:

  • Local wound treatment: wound debridement of avital tissue (wound toilet, i.e., removal of dead tissue); in this context, the so-called “moist wound treatment” has been established as a fundamental principle of the treatment of chronic wounds.
  • Preparatory measures (here: rehabilitation of the wound bed):
    • Dry necrosis (tissue death) is removed from loosened edges usually with a scalpel.
    • Deep wound cavities and fistula tracts can be curetted with a sharp spoon.
    • To ensure drainage of purulent wound secretions, a counterincision at the deepest pole of such ducts helps.
  • After debridement, a deep smear is performed as standard for microbiological diagnosis.
  • Therapeutic measures
    • Local wound treatment according to the wound situation:
      • No signs of infection → moist wound treatment;
        • Hydrocolloid dressings for bradytrophic tissue (tissue with slow metabolism) and low wound secretion.
        • Alginate and polyurethane foam dressings in early stage wound and environmental edema (= abundant secretions).
      • Wound infected→ debridement and antiseptic (wound disinfectant).
  • Pressure relief through relief shoes (therapeutic shoes; orthoses with soft padding, plaster technique), if necessary also crutches or wheelchair (see also under “Further therapy“).
  • Infection control
  • For patients in stage Wagner > 3, the use of hyperbaric oxygen therapy (synonym: HBO therapy; English : hyperbaric oxygen therapy; HBO2, HBOT; form of therapy in which oxygen – usually 100 percent in the inhaled air – is used) or stem cell therapy to prevent amputation may be considered
  • If necessary, also pedal interventional or surgical vascular reconstruction (goal: foot preservation).

Operations

  • Therapy of vascular diseases: In severe circulatory disorders, catheter intervention with balloon dilatation (widening of the narrowed section of the vessel with the aid of a liquid- or air-fillable balloon catheter) and/or stent (vascular support) is the primary treatment. For further treatment, open bypass surgery is available.
  • Foot surgical correction of (toe) deformities.
  • Amputation – if unavoidable, restriction to a part of the forefoot; Note: Always seek a second opinion!Note: A particularly high risk of amputation exists in patients who suffer from both gout and diabetes. (Approximately 25-fold increased risk of peripheral limb amputation).
  • Bariatric surgery/Bariatic surgery – In severely obese patients, gastric bypass (artificially reduced stomach size) may be indicated in terms of metabolic surgery. According to a study by Schauer et al, 42 percent of diabetics have a normal HbA1c after surgery (laboratory parameter for determining blood glucose over the past days or weeks/HbA1c is, so to speak, the “blood glucose long-term memory“). In another study by Mingrone even 75% of patients achieved remission of diabetes mellitus.

Further notes

  • A study using the National Institutes of Health Research database followed up 38,973 patients diagnosed with type 1 or 2 diabetes mellitus for a mean of 5.2 years.20,254 of them received statin therapy.Results: statin users were significantly less likely to have amputations (0.6% versus 1.1%)