Why trench foot would require amputation?

Trench foot, caused by prolonged exposure to cold, wet conditions, can lead to severe tissue damage and necrosis due to reduced blood flow. If untreated, the affected tissue can become infected, and the damage may progress to the point where it is no longer viable. In severe cases, amputation may be necessary to prevent the spread of infection and preserve the health of the remaining limb. Prompt medical treatment is crucial to prevent complications associated with this condition.