Tarsometatarsus

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Tarsometatarsus

 

a bone in birds located between the ti bia and the toes. The tarsometatarsus is formed by the concrescence of the third tarsal bone with the three middle (second through fourth) metatarsal bones that are concresced lengthwise. In Archeopteryx the metatarsal bones were free. In some adult extant birds, for example, penguins and frigate birds, the tarsometatarsus has traces of concrescence—openings and little grooves between the metatarsal bones. The length of the tarsometatarsus differs in different species of birds; for example, in climbing parrots it is very short, and in marsh birds it is the same length as the long tibias. The males of some Galliformes have a spur on the dorsal side of the tarsometatarsus. The fossils of giant reptiles (predatory dinosaurs), whose legs reveal a convergent resemblance to the legs of birds, also had a tarsometatarsus similar to that of birds.

References in periodicals archive ?
The metatarsophalangeal joint in the ostrich is the articulation of the distal extremity of the tarsometatarsal bone and the proximal extremities of the first phalanges of third and fourth digits (Fig la and b).
Injury to the tarsometatarsal joint complex during fixation of Lisfranc fracture dislocations: an anatomic study.
Injuries to the tarsometatarsal joint: incidence, classification and treatment.
A Lisfranc deformity is a tarsometatarsal fracture-dislocation that manifests itself as two types.
KEY WORDS: Tarsometatarsal joint Fracture-dislocation Open reduction Internal fixation.
9-cm periosteal reactive lesion was also observed on the left distal tarsometatarsal bone, suggesting osteomyelitis.
Injuries to the tarsometatarsal (TMT) joint complex or Lisfranc joint require a high index of suspicion in order to make a prompt and accurate diagnosis.
The injuries to the fourth and fifth tarsometatarsal joints: A review of the surgical management by internal fixation, arthrodesis and arthroplasty
Charcot's osteoarthropathy may affect the forefoot, the tarsometatarsal joints, the Chopart's or naviculocuneiform joints, and the ankle or subtalar joints, or be isolated to the calcaneus.
Clinical, quantitative assessment of first tarsometatarsal mobility in the sagittal plane and its relation to hallux valgus deformity.