Presentation
Left ankle pain following sport and general activity.
Patient Data
Age: 12 years
Gender: Male
From the case:
Talocalcaneal coalition
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Info
On the lateral view of the left ankle, there is a complete C sign between the posterior talus and sustentaculum tali consistent with coalition.
From the case:
Talocalcaneal coalition
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Info
There is irregularity of the talocalcaneal joint on the left suggestive of fibrous coalition. No bony bar.
From the case:
Talocalcaneal coalition
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Info
The normal right sustentaculum tali and left with its osseous continuity with the talus demonstrated.
Case Discussion
The commonest of the tarsal coalitions is talocalcaneal coalition and is demonstrated by the continuous C sign on a lateral ankle radiograph. They may be bony, cartilaginous or fibrous.
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