The cuboideonavicular joint is the articulation between the lateral surface of the navicular and the medial surface of the cuboid in the midfoot. It is typically a fibrous joint (syndesmosis) bound by dorsal, plantar, and interosseous cuboideonavicular ligaments, with minimal motion. Occasionally it is synovial, communicating with the cuneonavicular or calcaneocuboid joint cavities.
The cuboideonavicular joint is clinically relevant in midfoot injury assessment, where it may be disrupted as part of Chopart or Lisfranc injury patterns. Arthrosis at this level contributes to midfoot stiffness and pain, often requiring targeted injection or fusion as part of midfoot reconstruction. The joint's fibrous nature means it does not typically contribute to midfoot instability in isolation, but disruption of its interosseous ligament does indicate significant midfoot injury.
High-energy crush or twisting forces disrupt the cuboideonavicular joint as part of complex midfoot injury, contributing to lateral column instability that requires surgical stabilisation as part of comprehensive midfoot reconstruction.
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