Special shoes can help relieve pressure. Also known as bedsores, pressure ulcers are very common in older and immobile persons. When too much pressure is placed on them, cells do not get enough oxygen. Those cells closest to the bone begin to die, and the wound spreads toward the skin surface. Thus, a pressure ulcer indicates not only a surface wound, but also a deep tissue wound.
All wounds heal in three stages.
This stage occurs during the first few days. White blood cells clean the wound of debris and bacteria. After the inflammatory stage, the proliferative stage lasts about 3 weeks. Granulation occurs, which means that special cells called fibroblasts make collagen to fill in the wound. New blood vessels form.