Keratotic Deformities

Description: Corn
- accumulation of keratotic layers of epidermis
- thickened epithelium elevates prominence causing further pressure

Hard Corn
Due to extrinsic pressure from footwear
- most common on fibular aspect of Vth toe
- over head of prox phalanx

Soft Corns
- on the condyle of prox phalanx between the toes
- due to pressure b/t adjacent bony prominences
- ddx = fungal infection
- soft due to moisture
- commonest is med aspect 5th toe
- also common at base of web space overlying 4th prox phalanx lat condyle