Isolated dorsal midtarsal dislocation with pseudo-jones fracture: A rare case and literature review

Abstract

Background

The midtarsal joint (MTJ), or Chopart’s joint, is critical for foot stability, comprising the calcaneocuboid and talonavicular joints. Isolated MTJ dislocations are rare due to the joint's strong ligamentous support and proximity to other major joints, which are often affected first in high-energy injuries.

Case Description

We present a 20-year-old male with an isolated dorsal MTJ dislocation and a pseudo-Jones fracture after a fall from a ladder. Radiographs confirmed the dislocation and 5th metatarsal base fracture. Closed reduction under fluoroscopic guidance successfully realigned the dislocation, and the limb was immobilized for six weeks with non-weight-bearing and gentle ankle rehabilitation.

Conclusion

Isolated dorsal MTJ dislocations indicate significant trauma. Although reduction and fixation typically have good outcomes, there remains a risk of post-traumatic osteoarthritis, potentially requiring arthrodesis.