Medial cuneiform bone articulates with navicular proximally and the base of first metatarsal distally.
Structure of Medial Cuneiform:
It consists of the following surfaces.
- Dorsal Surface: It is rough and narrow.
- Distal Surface: It is the facet for the base of first metatarsal bone.
- Proximal Surface: It bears a facet for the navicular bone.
- Medial Surface: It is rough, subcutaneous and vertically convex. There is a large impression for the tendon of tibialis anterior.
- Lateral Surface: It is partly non-articular and contains a smooth right-angled strip for the intermediate cuneiform.
Blood supply of medial cuneiform:
Medial cuneiform bone receives its blood supply from the dorsal arterial network via medial, lateral and dorsal surfaces.
Nerve supply to medial cuneiform:
The medial cuneiform is supplied by the deep peroneal and medial plantar nerves.
Ossification of medial cuneiform:
The center of ossification of the medial cuneiform bone appears during the second year of life. Sometimes, there may be two centers instead of one.