Nonoperative treatment of talonavicular joint dislocation associated with jones fracture

Chopart luxation or talonavicular dislocations are rare injuries seen in clinical practice which constitute only 3.6:1 lakh per year. A proper evaluation involving both plain roentgenogram and computed tomography is necessary for preoperative planning for the management of dislocation. The two common varieties of Chopart luxations are medial and lateral types. In this case report, we discuss about a closed medial type of talonavicular dislocation associated with an undisplaced fracture fifth metatarsal base (Jones fracture) which was managed effectively with closed reduction and Plaster of paris (POP) immobilization. The patient was regularly followed up till 12 weeks post reduction. He was allowed to weight bear at the end of 9 weeks, and the range of movements was assessed at the end of 12 weeks which was found satisfactory. In our case, there is talonavicular medial dislocation with fifth metatarsal base fracture, without any associated ligamentous compromise, which leads us to propose a hypothesis that the fracture of the fifth metatarsal base along with talonavicular disruption may alleviate the other ligamentous injuries. Further studies should be conducted to find out the association between talonavicular dislocations with other metatarsal fractures, which might influence the ligamentous compromise at initial presentation.