A chronic wound is one that has failed to progress through the phases of healing in an orderly and timely fashion and has shown no significant progress toward healing in 30 days. Factors contributing to the chronicity of the wound may include:

• Pressure, trauma and/or lower extremity wounds

• Increased bacterial load

• Excessive proteases: Degraded growth factors, matrix metalloproteinases (MMPs), degraded cell surface structures

• Senescent/Aberrant cells

• Inappropriate treatment

 

Chronic wounds are typically identified by a raised, hyperproliferative, yet non-advancing wound margin. The area around the wound will be inflamed and this inflammation may be affect healing negatively.

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Types of chronic wounds may include, but are not limited to the following etiologies: venous ulcers, diabetic ulcers, and pressure ulcers.

Venous ulcers occur primarily in the legs of patients and are caused by problems with blood circulation due to dysfunctional blood valves or obstructed veins.

Diabetic ulcers often start as small scratches or bruises which patients with diabetes fail to notice due to nerve damage and limited sensitivity. Compromised immune systems and damaged capillaries lead to these formerly small and benign wounds becoming dangerously infected.

Pressure ulcers primarily afflict patients who are bedridden or of limited mobility. The constant pressure on the tissue over powers the pressure of the capillaries, affecting blood flow. Areas at the greatest risk for pressure ulcers are the sacrum, shoulder blades and heels. Correctly identifying the cause of a chronic wound as well as the local and systemic factors that may be contributing to poor wound healing is critical to successful wound treatment.