Acute wounds occur as a result of surgery or trauma. They move through the stages of healing within the predicted timeframe.
All chronic wounds begin as acute wounds. The acute wound becomes a chronic wound when it does not follow the healing stages resulting in a lengthened recovery. On average, a chronic wound is classified as one that fails to heal within four weeks and shows no sign of improvement within eight weeks. The most common form of chronic wounds are ulcers of the lower extremities.