Interphalangeal articulations of foot

Interphalangeal articulations of foot

Bones of the right foot, plantar (bottom) surface (Joint not labeled but region is visible)
Details
Identifiers
Latin articulationes interphalangeae pedis
Dorlands
/Elsevier		 a_64/12161342
TA A03.6.10.901
FMA 71357

Anatomical terminology

The interphalangeal articulations of the foot are the joints between the phalanges (bones) of the toes. They are ginglymoid (hinge) joints, and each has a plantar (underside) and two collateral ligaments. In the arrangement of these ligaments, extensor tendons supply the places of dorsal ligaments, which is similar to that in the metatarsophalangeal articulations.

Movements

The only movements permitted in the joints of the digits are flexion and extension; these movements are more extensive between the first and second phalanges than between the second and third. The flexor hallucis longus and flexor digitorum longus flex the interphalangeal joint of the big toe and lateral four toes, respectively. The tendons of both of these muscles cross as they reach their distal attachments. In other words, the flexor hallucis longus arises laterally, while the flexor digitorum longus arises medially.

The amount of flexion is very considerable, but extension is limited by the plantar and collateral ligaments.

See also

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)


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