PMC7607930_01
Lateral X-ray of right ankle after injury. Os trigonum fracture is seen (arrow).
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F1
Os trigonum fracture was detected at lateral X-ray of the right ankle (Figure 1).
Previous lateral X-ray of right ankle before injury. Lateral ankle radiograph depicting normal position and appearance of os trigonum (arrow).
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F2
Fracture was seen more clearly when actual X-rays were compared to the patient's older X-rays which were taken when he presented to our clinic because of ankle sprain two months ago (Figure 2).
(a) Sagittal and axial computed tomography scans of ankle showed a fracture of os trigonum (arrow). No additional injury was detected. (b) Magnetic resonance imaging of right ankle. Os trigonum fracture and surrounding edema are seen (arrow). No additional injury was detected.
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F3
Os trigonum fracture and surrounding edema were detected by CT and MRI (Figure 3).
Union of fracture is seen on lateral X-ray of patient as of six weeks from injury (arrow).
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F4
Union of fracture was seen on sixth week X-ray (Figure 4).