intercuneiform

Intercuneiform is an anatomical term used to describe structures located between the cuneiform bones of the foot. It is used as an adjective and in compound terms to refer to the joints, ligaments, or spaces between adjacent cuneiforms.

Anatomy: The human foot contains three cuneiform bones in the distal row of the tarsus: medial (first), intermediate (second), and lateral (third). The intercuneiform joints are the articulations between these bones: the medial–intermediate intercuneiform joint and the intermediate–lateral intercuneiform joint. These joints are small, synovial, plane-type joints reinforced by dorsal and plantar intercuneiform ligaments. They contribute to midfoot stability and permit limited gliding movements that accommodate foot pronation and supination during gait.

Clinical significance: Intercuneiform structures can be involved in midfoot trauma, most notably injuries affecting the Lisfranc complex. Fractures or dislocations of intercuneiform joints are uncommon but recognized. Diagnosis relies on clinical assessment and imaging, including X-ray and often CT or MRI to delineate the extent of injury. Treatment ranges from immobilization for minor injuries to surgical stabilization for unstable injuries or dislocations.

Etymology: The term derives from Latin inter- meaning between and cuneiforme meaning wedge-shaped, reflecting the position of these joints between the cuneiform bones.