What defines a hammertoe?

A hammertoe is characterized by a specific deformity in which the proximal interphalangeal joint is plantarflexed. This condition typically results in the toe being positioned in a downward flexion at this joint, which can cause discomfort and lead to issues such as pressure sores or calluses on the toe. The abnormal positioning can occur in one or multiple toes and is often associated with an imbalance of the muscles, tendons, or ligaments supporting the toe.

The description of plantarflexion in the context of the proximal interphalangeal joint is crucial as it highlights the typical alignment seen in hammertoes, allowing for better understanding of their mechanical implications on foot function and footwear choices. This knowledge is essential for effective diagnosis and treatment planning for individuals presenting with this condition.