A claw toe is a toe deformity consisting in the over-flexion of the proximal and distal interphalangeal joints.
Claw toes are caused by the dysfunction of the extensor and flexor tendons of toes, thus producing an imbalance in the normal functioning of structures and resulting in an abnormal, claw-like position of the toes.
This condition is sometimes painful and leads to skin injuries caused by friction of toe bone protuberances against footwear.
There are different types of medical treatment, such as the removal of skin injuries with a scalpel blade, the use of silicone protective pads or orthotics to compensate for muscle imbalance.
Source: Instituto Valenciano del Pie