Metatarsals: Difference between revisions
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== Introduction == | == Introduction == | ||
The metatarsals refer to five long bones that are located in each foot. They are numbered | The metatarsals refer to five long bones that are located in each foot. They are numbered I to V, from medial to lateral. | ||
Together, the metatarsal and tarsal bones help to form the arches of the foot, which are essential for weight-bearing as well as walking. | Together, the metatarsal and tarsal bones help to form the arches of the foot, which are essential for weight-bearing as well as walking. | ||
| Line 27: | Line 27: | ||
!Distal articulation | !Distal articulation | ||
|- | |- | ||
|Metatarsal | |Metatarsal I | ||
|medial cuneiform | |medial cuneiform | ||
|1st proximal phalanx | |1st proximal phalanx | ||
|- | |- | ||
|Metatarsal | |Metatarsal II | ||
|medial, intermediate & lateral cuneiforms | |medial, intermediate & lateral cuneiforms | ||
|2nd proximal phalanx | |2nd proximal phalanx | ||
|- | |- | ||
|Metatarsal | |Metatarsal III | ||
|lateral cuneiform | |lateral cuneiform | ||
|3rd proximal phalanx | |3rd proximal phalanx | ||
|- | |- | ||
|Metatarsal | |Metatarsal IV | ||
|cuboid | |cuboid | ||
|4th proximal phalanx | |4th proximal phalanx | ||
|- | |- | ||
|Metatarsal | |Metatarsal V | ||
|cuboid | |cuboid | ||
|5th proximal phalanx | |5th proximal phalanx | ||
|} | |} | ||
== Attachments == | |||
{| class="wikitable" | |||
|+ | |||
!Metatarsal | |||
!Muscle attachment | |||
|- | |||
|Metatarsal I | |||
|<nowiki>- Base: tibialis anterior, fibularis longus</nowiki> | |||
- Tuberosity: fibularis longus | |||
- Lateral shaft: 1st dorsal interosseous | |||
|- | |||
|Metatarsal II | |||
| - Medial shaft: 1st dorsal interosseous | |||
- Lateral shaft: 2nd doral interosseous | |||
|- | |||
|Metatarsal III | |||
| - Medial shaft: 2nd dorsal interosseus & 1st plantar interosseus | |||
- Lateral shaft: 3rd dorsal interosseous | |||
|- | |||
|Metatarsal IV | |||
| - Medial shaft: 3rd dorsal interosseus & 2nd plantar interosseus | |||
- Lateral shaft: 4th dorsal interosseus | |||
|- | |||
|Metatarsal V | |||
|<nowiki>- Medial shaft: 4th dorsal interosseus & 3rd plantar interosseus</nowiki> | |||
- Dorsal base: fibularis tertius | |||
- Tuberosity: fibularis brevis | |||
- Plantar base: flexor digiti minimi brevis | |||
|} | |||
===== Musculotendinous ===== | ===== Musculotendinous ===== | ||
Revision as of 02:22, 24 May 2021
Original Editor - Shejza Mino
Top Contributors - Shejza Mino, Lucinda hampton, Kim Jackson, Vidya Acharya and Wendy Snyders
Introduction[edit | edit source]
The metatarsals refer to five long bones that are located in each foot. They are numbered I to V, from medial to lateral.
Together, the metatarsal and tarsal bones help to form the arches of the foot, which are essential for weight-bearing as well as walking.
Gross Anatomy & Structure[edit | edit source]
The metatarsal bones start at the tarsus and end at the phalanges, forming two joints: the tarsometatarsal joint & metatarsolphalangeal joint.
Each of the metatarsal bones consists of the following:
- proximal base
- shaft (aka body)
- neck
- distal head
Articulations[edit | edit source]
Each base of the metatarsal bone articulates with at least one of the tarsal bones, forming the tarsometatarsal joints. The head of the metatarsals articulate with the phalanges, making up the metatarsalphalangeal joints. Additionally, the base of the metatarsals also articulates with the base of the adjacent metatarsal, forming the intermetatarsal joints.
| Bone (metatarsal) | Proximal articulation | Distal articulation |
|---|---|---|
| Metatarsal I | medial cuneiform | 1st proximal phalanx |
| Metatarsal II | medial, intermediate & lateral cuneiforms | 2nd proximal phalanx |
| Metatarsal III | lateral cuneiform | 3rd proximal phalanx |
| Metatarsal IV | cuboid | 4th proximal phalanx |
| Metatarsal V | cuboid | 5th proximal phalanx |
Attachments[edit | edit source]
| Metatarsal | Muscle attachment |
|---|---|
| Metatarsal I | - Base: tibialis anterior, fibularis longus
- Tuberosity: fibularis longus - Lateral shaft: 1st dorsal interosseous |
| Metatarsal II | - Medial shaft: 1st dorsal interosseous
- Lateral shaft: 2nd doral interosseous |
| Metatarsal III | - Medial shaft: 2nd dorsal interosseus & 1st plantar interosseus
- Lateral shaft: 3rd dorsal interosseous |
| Metatarsal IV | - Medial shaft: 3rd dorsal interosseus & 2nd plantar interosseus
- Lateral shaft: 4th dorsal interosseus |
| Metatarsal V | - Medial shaft: 4th dorsal interosseus & 3rd plantar interosseus
- Dorsal base: fibularis tertius - Tuberosity: fibularis brevis - Plantar base: flexor digiti minimi brevis |
Musculotendinous[edit | edit source]
Ligamentous[edit | edit source]
Relations[edit | edit source]
Vascular[edit | edit source]
Nervous[edit | edit source]
Muscular[edit | edit source]
Clinical Significance[edit | edit source]
Structural Considerations[edit | edit source]
Injury[edit | edit source]
Resources[edit | edit source]
- bulleted list
- x
or
- numbered list
- x
