Adjective
metatarsophalangeal (not comparable)
(anatomy) Relating to the metatarsus and phalange.
The plantar interossei adducts and the dorsal interossei abducts these digits and are also plantar flexors at the metatarsophalangeal joints. Source: Internet
The joints between the phalanges are called interphalangeal and those between the metatarsus and phalanges are called metatarsophalangeal (MTP). Source: Internet