Which phalanx has 2 bones?

The hallux, commonly known as the big toe, is unique among the toes in that it has only two phalanges: the proximal phalanx and the distal phalanx. This anatomical structure is significant as it reflects the hallux's primary importance in balance and push-off during walking, running, and other activities. The presence of two bones in the hallux allows for greater stability and leverage while maintaining functionality.

In contrast, the other toes (second, third, and fourth) each consist of three phalanges—proximal, middle, and distal—making them structurally different from the hallux. This difference in phalanx count is fundamental in understanding foot mechanics and the role of each toe within the context of pedorthics, especially regarding footwear design and fitting.