Bilateral Lateral Cuneiform–Third Metatarsal and Unilateral Right Navicular–Medial Cuneiform Coalitions: A Rare Case Report

Authors

  • Ibraheem AlQurashi Musculoskeletal Radiology Consultant, Taif Health Cluster, King Abdulaziz Specialist Hospital- Taif
  • Mohammed Kifah Alkhars Radiology Senior Registrar, Al-Ahsa Health Cluster, King Fahad Hospital, Al-Ahsa
  • Tagelasfya Elkhair Abdelwahab Radiology Senior Registrar, Taif Health Cluster, King Abdulaziz Specialist Hospital- Taif
  • Mohammed Alhassan Medical Student, College of Medicine, King Faisal University, Al Ahsa
  • Rawan Salem Alkhammas Medical Student, College of Medicine, King Faisal University, Al Ahsa

DOI:

https://doi.org/10.3941/jrcr.6046

Abstract

Introduction:

Tarsal coalition—an abnormal fusion of tarsal bones—typically has a congenital etiology, but it can occasionally be an acquired condition. Calcaneonavicular and talocalcaneal coalitions account for the vast majority of tarsal coalitions, while midfoot coalitions are exceptionally rare.

Case presentation:

We report a case of a 27-year-old man with chronic bilateral foot pain exacerbated by physical activity. Non-enhanced contrast multiplanar CT demonstrated non osseous coalitions between the lateral cuneiform and the base of the third metatarsal bilaterally, as well as the right NC-MC joint. Subsequent MRI confirmed pseudoarthrosis interfaces with mild subcortical irregularity and bone marrow edema at the LC-MT3 joint and the right NC-MC articulation.

Conclusion:
To our knowledge, this is the first documented case of simultaneous bilateral lateral cuneiform–third metatarsal coalition combined with a right navicular–medial cuneiform coalition.

Right navicular–medial cuneiform coalition in a 27-year-old man with chronic foot pain. A. Sagittal PD fat-sat of the right foot shows navicular–medial cuneiform articulation with cortical irregularity, sclerosis, and bone marrow edema. B, C. Sagittal CT (B) and 3D reconstructed image (C) of the same foot further illustrates the coalition.

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Published

2026-02-28

Issue

Vol. 20 No. 2 (2026)

Section

Musculoskeletal Radiology

License

Copyright (c) 2026 Journal of Radiology Case Reports

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