Metatarsal bones

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For the bone in birds, see tarsometatarsus.
"Metatarsus" redirects here. For the segment of an arthropod leg, see Arthropod leg § Chelicerata.
Metatarsal bones
Skeleton of foot. Superior view. Metatarsals shown in green
Skeleton of left foot. Lateral aspect. Metatarsals shown in purple
Details
Identifiers
Latinmetatarsus
pl. ossa metatarsi (also: ossa metatarsalia)
MeSHD008682
TA98A02.5.17.001
TA21495
FMA71340
Anatomical terms of bone

The metatarsal bones or metatarsus (pl.: metatarsi) are a group of five

metacarpal bones of the hand. The lengths of the metatarsal bones in humans are, in descending order, second, third, fourth, fifth, and first.[1] A bovine hind leg has two metatarsals.[2]

Structure

The five metatarsals are

plantar surface is grooved antero-posteriorly for the passage of the flexor tendons, and marked on either side by an articular eminence continuous with the terminal articular surface.[4]

During growth, the growth plates are located distally on the metatarsals, except on the first metatarsal where it is located proximally. Yet it is quite common to have an accessory growth plate on the distal first metatarsal.[5]

Articulations

Bones of the right foot. Dorsal surface. Metatarsus shown in yellow.

The base of each metatarsal bone articulates with one or more of the tarsal bones at the

intermetatarsal joints

Muscle attachments

Muscle attachments (seen from above)
Muscle attachments (seen from below)
Muscle Direction Attachment[7]
Tibialis anterior Insertion Basis of first metatarsal
Peroneous tertius
 Insertion Dorsal side basis of fifth metatarsal
Peroneous longus
 Insertion Tuberosity of first metatarsal
Peroneous brevis
 Insertion Tuberosity of fifth metatarsal
Horizontal head of adductor hallucis Origin Deep transverse metatarsal ligament
Flexor digiti minimi brevis
 Origin Basis of fifth metatarsal
Plantar interossei Origin Medial side of third, fourth and fifth metatarsal
Dorsal interossei Origin First to fifth metatarsal

Clinical significance

Injuries

Fracture of the base of the 5th metatarsal

The metatarsal bones are often broken by

oversupinated during locomotion.[9]

Protection from injuries can be given by the use of safety footwear which can use built-in or removable metatarsal guards.

Additional images

  • X-ray of foot.
    X-ray of foot.
  • Skeleton of left foot. Medial aspect.
    Skeleton of left foot. Medial aspect.
  • Oblique section of left intertarsal and tarsometatarsal articulations, showing the synovial cavities.
    Oblique section of left intertarsal and tarsometatarsal articulations, showing the synovial cavities.
  • Ankle and tarsometarsal joints, showing bones of foot. Deep dissection.
    Ankle and tarsometarsal joints, showing bones of foot. Deep dissection.
  • Nitti Safety Footwear with removable metatarsal guard.
    Safety footwear with removable metatarsal guard.

See also

Notes

  1. ISBN 978-87-628-0307-7
    .
  2. ^ "Identification – cattle hock bone |".
  3. ^ Platzer 2004, p. 220
  4. ^ Gray's 1918, 6d. 2. The Metatarsus
  5. PMID 2681682
    .
  6. ^ a b c d e Platzer 2004, p. 218
  7. ISBN 978-87-628-0307-7
    .
  8. ^ Bill, Mills (11 December 2010). "Sock boffs may have cured metatarsal woes for Rooney and Co". www.mirrorfootball.co.uk. Retrieved 12 December 2010.
  9. ^ Perron, Andrew D. (2005-11-23). "Metatarsal Stress Fracture". Retrieved 2007-09-13.

References

External links

Wikimedia Commons has media related to Metatarsus.
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