Female, 72 years old, was admitted to the hospital on 2011-08-22 with “poor cognitive ability, babbling for 5 years, unable to walk for nearly 6 months, and blisters and ulcers all over her body for 2 months. Diagnosis: Alzheimer’s disease, decubitus ulcer, urinary tract infection, with an area ranging from 1cm×1cm to 10cm×9cm, including a decubitus ulcer of about 3cm×3cm on the right femoral ridge and a decubitus ulcer of about 10cm×9cm on the left femoral ridge; after manual debridement and removal of necrotic tissue, the right decubitus ulcer was about 1.2cm deep, and there were three sinus tracts on the anterior and posterior sides of the bottom of the decubitus ulcer, which were about 0.5cm to 2.0cm deep; The left decubitus ulcer was about 1 cm deep, and there were also sinus tracts and sutures, which made manual debridement very difficult. After three biological debridement treatments, the wound was cleaned, the granulation tissue was fresh, and the wound healing was significantly accelerated. The photo shows the treatment and healing of the right decubitus ulcer. After manual debridement, the ulcer was about 1.2 cm deep with 2 larger sinus tracts posteriorly and 1 smaller sinus tract anteriorly. Maggots under treatment!!! Maggot treatment in progress Maggot treatment in progress After maggot debridement, fresh granulation in the wound, sinus tract closure, wound reduction wound reduction wound reduction, significant wound reduction wound healing