The word "metatarsophalangeal" refers to a joint between the metatarsal bones of the foot and the phalanges bones of the toes. Some synonyms for this term include MTP joint, metatarsophalangeal articulation and metatarsophalangeal junction. These synonyms are commonly used in medical jargon to describe the joint that connects the ball of the foot to the toes. The MTP joint is essential for movement and support of the foot, and any damage to this joint can result in significant problems and limitations. Certain conditions, such as arthritis, injuries or foot abnormalities, can cause pain and discomfort in the metatarsophalangeal joint.