plantar cuneocuboid ligament plantar cuneocuboid ligament the plantar cuneocuboid ligament is a fibrous band that connects the plantar surfaces of the cuboid to the lateral surface of the cuneiform bones. plantar cuneocuboid ligamentdetailsfromcuneiformtocuboididentifierslatinligamentum cuneocuboideum plantareta98a03.6.10.522ta21947fma44266anatomical terminology