Which of the following is a defining feature of claw toe?

A defining feature of claw toe is hyperextension at the metatarsophalangeal (MTP) joint. In claw toe, the toe experiences a characteristic deformity where the MTP joint extends upward, while the proximal interphalangeal (PIP) joint and the distal interphalangeal (DIP) joint flex downward. This positions the toe in a claw-like appearance. Understanding this mechanism is crucial for addressing treatment options and fitting therapeutic footwear appropriately for individuals affected by this condition.

The other options highlight different movements or conditions that do not accurately define claw toe. For instance, an inverted toe position refers to the alignment of the toes rather than the specific deformity of claw toe. Plantarflexion at the MTP joint, where the MTP joint bends downward, is not a characteristic of claw toe either; instead, it is typically associated with other toe deformities. Similarly, inadequate foot support relates to the overall foot structure and shoe fit rather than the specific mechanics of claw toe.