Scenes from the Polyclinic: midfoot dislocation

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SALT LAKE CITY - Many Winter Olympic sports involve breathtaking, high-flying maneuvers such as freestyle aerial skiing. It was one of these moves, unfortunately, that resulted in a midfoot fracture-dislocation, including a navicular fracture and dislocation between the lateral cuneiform and the cuboid.

The images below were acquired on an Mx8000 quad-detector CT scanner (Philips Medical Systems, Bothell, WA) at the University of Utah hospital, located a few minutes away from the Polyclinic. The images were reformatted on a Marconi PACS station by the radiologist.  Reformatting enables the radiologist to choose the optimal plane and angulation.

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Direct coronal CT image through the midfoot, demonstrating dislocation between the lateral cuneiform and the cuboid. Soft-tissue algorithms are routinely used in addition to bone algorithm in CT trauma evaluation to enable evaluation of tendons and ligaments. This soft-tissue image shows tiny avulsion fragments dorsally due to avulsion of the interosseous ligaments between the cuneiform and cuboid.

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Sagittal reformatted image through the lateral aspect of the foot shows inferior subluxation of the cuboid (arrow) relative to the fourth metatarsal.

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Sagittal reformatted image through the medial aspect of the foot demonstrates the fracture (arrow) of the inferior portion of the navicular.

By Dr. Julia Crim
AuntMinnie.com contributing writer
February 22, 2002

Dr. Crim is chief of musculoskeletal imaging at the Olympic Polyclinic.

Related Reading

Scenes from the Polyclinic: syndesmosis, February 20, 2002

Scenes from the Polyclinic: A case study in the ACL-deficient knee, February 19, 2002

Medical imaging goes for gold at Olympic Polyclinic, February 8, 2002

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