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  • Title: Chopart Joint Injuries: Assessment, Treatment, and 10-Year Results.
    Author: Rammelt S, Missbach T.
    Journal: J Orthop Trauma; 2023 Jan 01; 37(1):e14-e21. PubMed ID: 35976798.
    Abstract:
    OBJECTIVES: To investigate injury patterns and long-term outcomes of midtarsal (Chopart) injuries in a sizeable number of patients. DESIGN: Prospective study. SETTING: Level 1 trauma center. PATIENTS: One hundred twenty-two patients (average age 37.6 years) with 128 Chopart injuries over a 15-year period, 27% of who were polytraumatized. In 47%, more than 1 of the 4 bones of the midtarsal joint was fractured. The navicular and cuboid were fractured most often. Purely ligamentous dislocations occurred in 4%. INTERVENTIONS: Operative treatment tailored to the individual fracture pattern was performed in 91.4%. MAIN OUTCOME MEASUREMENTS: Foot Function Index, American Orthopaedic Foot and Ankle Society score, SF-36 physical (PCS) and mental component summary (MCS). RESULTS: Seventy-three patients with 75 Chopart injuries were available for follow-up at an average of 10.1 years. The Foot Function Index averaged 26.9, the American Orthopaedic Foot and Ankle Society score averaged 71.5, and the SF-36 PCS and MCS averaged 43.5 and 51.2, respectively. Negative prognostic factors were a high injury severity score, work-related accidents, open and multiple fractures, purely ligamentous dislocations, staged surgery, delay of treatment >4 weeks, postoperative infection, and primary or secondary fusion. Open reduction and internal fixation led to significantly better results than attempted closed reduction and percutaneous fixation. Radiographic signs of posttraumatic arthritis were observed in 93%, but only 4.7% of cases required a late fusion at the Chopart joint. CONCLUSIONS: Chopart joint injuries lead to functional restrictions in the long term. Purely ligamentous dislocations have the worst prognosis, whereas fractures of a single bone have a favorable outcome after anatomic reduction and internal fixation. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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