During the manipulation, some doctors may apply counter-pressure on the
calcaneocuboid joint, which may be the main reason behind the failure of the treatment or recurrence of the deformity.
Approximately 40% of JIA patients will experience rear foot (i.e., subtalar) joint synovitis [8], while the midfoot (talonavicular and
calcaneocuboid) and phalangeal joints appear to be less affected [5].
However, there has never been a report of psychogenic equinovarus caused by dislocation of the Chopart joint complex (the articulation between the talonavicular and
calcaneocuboid joints) confirmed on computed tomography (CT) images.
Sequelae include loss of height, heel widening subfibular impingement,
calcaneocuboid joint impingement, varus heel, and posttraumatic arthrosis.
CT clearly demonstrated a minimally displaced, comminuted cuboid fracture with articular extension into both the
calcaneocuboid joint posteriorly and the cuboid-metatarsal joints anteriorly, with little to no articular incongruity (Fig.
1.0 = lateral border curves at
calcaneocuboid joint.
(type 3), and types 1 to 3 plus subtalar,
calcaneocuboid, or talonavicular arthritis (type 4).
(7,13) When arising from within the joints, the tarsometatarsal, metatarsophalangeal and
calcaneocuboid are common origin points.
Platt, a sophomore, started 24 of 27 games this season, averaging 3.1 points and 2.1 rebounds per game despite suffering pain in his
calcaneocuboid joint for most of that time.