Two sesamoid bones are associated with the medial column, located plantar to the first metatarsal head within the flexor hallucis brevis tendon. The lateral compartment of the TMT joint complex is composed of the fourth and fifth metatarsals and the cuboid. The second metatarsal is the longest of the metatarsal bones and articulates with the intermediate cuneiform, while the third metatarsal articulates with the lateral cuneiform. The middle column of the TMT joint complex is composed of the second and third metatarsals and intermediate and lateral cuneiforms, respectively. The first metatarsal is the shortest and widest metatarsal and articulates with the medial cuneiform bone proximally and the proximal phalanx of the hallux distally. The first column includes the first metatarsal and the medial cuneiform. The TMT joint complex can divide into a medial, middle, and lateral column. Injury and disruption of the articulation between the medial cuneiform and the second metatarsal base is commonly known as Lisfranc injury. The proximal connection of the metatarsal bones and tarsal bones make up the tarsometatarsal (TMT) joint complex, commonly referred to as Lisfranc’s joint. Each of the metatarsal bones articulates proximally with a tarsal bone and distally to one of the five phalanges of the foot, making the metatarsophalangeal (TMP) joint. The five metatarsal bones are numbered from one through five, medially to laterally, starting at the hallux (great toe).
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