PMC5468551_01
The X-rays show a bony-like protuberance localized at the anteromedial and posteromedial aspect of the talus (arrows).
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Plain radiographs showed bony-like irregular protuberances localized at the anteromedial and posteromedial aspect of the talus (Figure 1).
The CT scan shows the bony-like protuberances arising at the anteromedial and posteromedial aspect of the talus (arrows) and the relationships with the other bone structures of the ankle.
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Computed Tomography (CT, Figure 2) and Magnetic Resonance Imaging (MRI, Figure 3) were performed and they were useful to confirm findings consistent with Trevor's disease lesions.
MRI view of the lesion.
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Computed Tomography (CT, Figure 2) and Magnetic Resonance Imaging (MRI, Figure 3) were performed and they were useful to confirm findings consistent with Trevor's disease lesions.
Five-year follow-up X-rays without signs of recurrence or arthritis.
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The outpatient examination after 1 month and 6 months did not show any improvement of the symptoms; then, in September 2011, an arthroscopic removal of the posteromedial protuberance was performed by a posterior two-portal approach (Figure 4); the anteromedial exostoses were removed by an open surgical approach during the same session.
Clinical examination at the 5-year follow-up.
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The X-rays showed that the left ankle was free of recurrence and there were not ankle arthritis signs (Figure 5).
X-rays show medial talus and tibia bony formations (white arrows) and posterior cauliflower fashioned loose body (black arrow).
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X-rays examination showed a protuberance of bony-like nature starting from the medial articular portion of the talus and with lobulated appearance and a large intra-articular cauliflower fashioned loose body (Figure 6).
PMC5468551_02
X-rays show medial talus and tibia bony formations (white arrows) and posterior cauliflower fashioned loose body (black arrow).
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fig6
X-rays examination showed a protuberance of bony-like nature starting from the medial articular portion of the talus and with lobulated appearance and a large intra-articular cauliflower fashioned loose body (Figure 6).
3D reconstruction CT scan showing medial lobulated bony prominences.
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The 3D reconstruction CT scan demonstrated an expansion of the bone arising from the anteromedial aspect of the talus associated with an irregularity of the distal third of the tibia (Figure 7); MRI described a pedicled oval bone tumor arising from the talus (Figure 8).
The MRI shows pedicled bone tumor arising from the talus.
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fig8
The 3D reconstruction CT scan demonstrated an expansion of the bone arising from the anteromedial aspect of the talus associated with an irregularity of the distal third of the tibia (Figure 7); MRI described a pedicled oval bone tumor arising from the talus (Figure 8).
Five-year follow-up X-rays without signs of recurrence or arthritis.
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The X-rays (Figure 9) did not show signs of recurrence and there were no signs of ankle arthritis.
Range of motion and clinical findings at the 5-year follow-up.
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The clinical examination showed that the ankle was stable; the ROM limitation was less than 5  in comparison with the contralateral without clinical significance; there was absence of pain and swelling (Figure 10).