Which of the following is NOT a predisposing factor for interdigital fibroma?

• A. Interdigital dermatitis
• B. Foot rot
• C. Foreign body
• D. Poor husbandry

Answer: (D)

Interdigital fibroma arises when the skin between the toes experiences ongoing irritation and inflammation, prompting fibroblast activity and fibrous tissue growth. The factors that truly predispose to this condition are local irritants that keep the interdigital tissue inflamed: interdigital dermatitis and foot rot create repeated inflammation in that area, and a foreign body can act as a persistent irritant, sustaining the irritation and driving fibrous proliferation.

Poor husbandry, while it can raise the risk of hoof problems in general by compromising hygiene and allowing infections, is not a specific local irritant of the interdigital tissue. Therefore it is not considered a direct predisposing factor for interdigital fibroma.