Fifth metatarsal bone

From Wikipedia, the free encyclopedia

Bone: Fifth metatarsal bone
The fifth metatarsal. (Left.)
Bones of the right foot. Dorsal surface.
Latin	os metatarsale V
Gray's	subject #64 274

The fifth metatarsal bone is recognized by a rough eminence, the tuberosity, on the lateral side of its base.

The base articulates behind, by a triangular surface cut obliquely in a transverse direction, with the cuboid; and medially, with the fourth metatarsal.

On the medial part of its dorsal surface is inserted the tendon of the Peronæus tertius and on the dorsal surface of the tuberosity that of the Peronæus brevis.

A strong band of the plantar aponeurosis connects the projecting part of the tuberosity with the lateral process of the tuberosity of the calcaneus.

The plantar surface of the base is grooved for the tendon of the Abductor digiti quinti, and gives origin to theFlexor digiti quinti brevis.

The base of the metatarsal is often injured and a particularly notorious fracture is the Jones fracture.

[edit] Additional images

X-ray of foot, showing phalangeal fracture

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e Bones of lower limbs

femur: head of femur (fovea capitis femoris) - neck of femur - greater trochanter - trochanteric fossa - lesser trochanter - tubercle of the femur - intertrochanteric line - intertrochanteric crest - linea quadrata - body of femur (linea aspera, third trochanter, pectineal line, adductor tubercle) - lower extremity of femur (lateral condyle, medial condyle, lateral epicondyle, medial epicondyle, patellar surface) patella tibia: upper extremity - medial condyle - lateral condyle - intercondyloid eminence - tuberosity of the tibia - posterior intercondyloid fossa - anterior intercondyloid fossa body of tibia - soleal line - lower extremity - medial malleolus fibula: head of fibula - body of fibula - lateral malleolus tarsus: calcaneus (sustentaculum tali, trochlear process) - talus - cuboid - medial cuneiform - intermediate - lateral metatarsus: 1st metatarsal - 2nd - 3rd - 4th - 5th phalanges of the foot