J Korean Soc Radiol.  2013 Oct;69(4):317-320. 10.3348/jksr.2013.69.4.317.

Imaging Findings of CT and MRI of Os Supratalare: A Case Report

• Kim SJ
• Kim O

• KMID: 2041954
• DOI: http://doi.org/10.3348/jksr.2013.69.4.317

Abstract

The os supratalare is quite a rare accessory ossicle of the ankle and the foot. We present imaging findings of a symptomatic os supratalare in a 21-year-old woman with a painful bump of the dorsal aspect on her hind foot. CT and MRI are helpful to distinguish this accessory ossicle from a fracture or an osteochondroma. Knowledge of imaging findings and clinical significances of os supratalare will be helpful for accurate diagnosis and appropriate management.

MeSH Terms

Animals
Ankle
Female
Foot
Humans
Magnetic Resonance Spectroscopy
Osteochondroma
Young Adult

Figure

• 

  Fig. 1 A 21-year-old woman with os supratalare. A. Lateral radiograph of the ankle shows the os supratalare located dorsal aspect of the talus (long arrow). Subtle radiolucent line (short arrow) between the os supratalare and the talus is noted. B, C. Axial and sagittal CT images show the os supratalare close to the talar head. A narrow and mild irregular interface between the os and the talus is noted (long arrows in B and C). Small cysts and sclerosis along the interface and small bony productive changes are also noted (short arrow in B). D. Sagittal proton density image shows mild hyperintense signal intensity (long arrow) between the os supratalare and the talus with bone marrow edema (short arrows). E. Gadolinium-enhanced T1-weighted spectral pre-saturation with inversion recovery image shows bone marrow edema (short arrow) in the os supratalare and peripheral enhancing multiloculated cystic lesion in the anterior aspect of the os supratalare (long arrow). F. Axial T2-weighted image shows the os supratalare (short arrow) and multiloculated cystic lesion (long arrow).

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