Pressure ulcers are skin lesions caused by unrelieved pressure or other forces resulting in damage to the underlying tissue. Usually, pressure ulcers are located over a boney prominence of the body. Pressure ulcers can be staged according to the extent of tissue damage. The staging was proposed by Shea in 1975  and the Wound Ostomy Society (International Association of Enterostomal Therapy) in 1988, and was finally agreed upon in 1989 by the National Pressure Ulcer Advisory Panel, United States.
Granulation Tissue Spina Bifida Pressure Ulcer Sinus Tract Patient Medical History
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