The metatarsophalangeal joint, commonly referred to as the MTP joint, is an important part of the foot. This joint connects the bones of the metatarsals to the phalanges, allowing for movement and flexibility. While the term "metatarsophalangeal joint" is widely used in medical circles, there are many synonyms that can be used to describe this joint. Some of these synonyms include the foot knuckles, the MTP articulation, and the ball of the foot. Each of these terms describes the same joint and can be used interchangeably when discussing the anatomy and function of the foot.