The calcaneocuboid joint is the lateral component of the transverse tarsal (Chopart) joint, forming the pivot of lateral column midfoot motion. When the hindfoot is inverted (rigid foot for push-off), the calcaneo-cuboid and talo-navicular joint axes become divergent and the midfoot is locked; when the hindfoot is everted (flexible foot for terrain adaptation), the axes become parallel allowing midfoot motion.
Calcaneocuboid joint arthritis from calcaneal fracture malunion or inflammatory arthritis produces lateral midfoot pain managed with orthotics and eventually isolated calcaneocuboid arthrodesis. The joint is routinely fused in triple arthrodesis (subtalar, calcaneocuboid, and talonavicular joints) for severe hindfoot deformity.
Lateral midfoot joint degeneration from post-traumatic or inflammatory causes producing lateral midfoot pain managed with orthotic support and eventually arthrodesis.
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