How maggot therapy clears a wound
In maggot debridement therapy, clinicians place laboratory-raised, disinfected larvae of the green bottle fly Lucilia sericata on a carefully selected wound. A dressing holds them in place while allowing air to circulate; after a prescribed period, the larvae are removed. This is controlled wound care, not an open-ended release of insects.
The larvae help clean a wound in two linked ways. They feed on dead and damaged tissue, and they release digestive substances that soften it so it can be consumed. Those substances can also affect microbes and the material that helps bacteria cling together in a biofilm—a community of microbes embedded in a protective, sticky layer. Biofilms can make infections harder to treat, though they do not make bacteria universally impervious to antibiotics.
Why clinicians use it selectively
Removing dead tissue can give healthier tissue a better chance to heal and help clinicians assess the wound. The larvae tend to spare viable tissue, but that does not mean treatment is perfectly selective or painless: some patients experience discomfort, and the wound needs monitoring. The larvae are raised and disinfected to reduce the risk of introducing other organisms.
Maggot therapy is one option for certain wounds that need debridement, including some diabetic foot ulcers. It does not by itself correct the underlying problems that can prevent healing, such as poor blood flow or ongoing pressure, and it is not a substitute for other necessary infection care. The striking part is the division of labor: tiny larvae can help remove stubborn dead material in a wound, while clinicians address the conditions that allowed it to form.
