Bedsore is an example of which of the following type of ulcer?
Tropical ulcer
Trophic ulcer
Venous ulcer
Post thrombotic ulcer
Bedsore and perforating ulcers are typical examples of trophic ulcers. Trophic ulcers have punched-out edge with slough in the floor resembling a gummatous ulcer. Factors predisposing its development are: injury, anemia, moisture, pressure and malnutrition. Ref: Bailey and Love's Sho Practice of Surgery, 24th Edition, Page 939; A Manual of Clinical Surgery, 6th Edition, Page 51; Schwaz's Principles of Surgery, 9th Edition, Chapter 9.