Medial cuneiform facet of navicular bone

The medial cuneiform facet of the navicular bone is the largest of the three distal articular facets on the navicular. It is located on the medial aspect of the distal navicular and articulates with the medial cuneiform. Morphometric studies show that the mean height of this facet is approximately 19.9 mm and the mean width is about 15.8 mm.

Morphologically, the most common shape of the anterior facet for the medial cuneiform is quadrilateral, observed in 85–89% of specimens, with no significant difference between right and left sides.

This facet forms a congruent joint surface with the medial cuneiform, contributing to the stability of the medial column of the foot. The naviculocuneiform ligament spans this articulation, providing additional support to the medial longitudinal arch.

The facet is clinically relevant for surgical procedures such as medial column fusion and fixation, where precise knowledge of its dimensions and shape is essential for optimal screw placement and joint alignment.