Presentation
Long-standing painful flat foot.
Patient Data
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There are multiple tarsal coalitions between the talus, the calcaneum, the navicular and the cuboid bones, with visible pes planus.
On the frontal view, the ankle articular surfaces have the appearance of a ball and socket joint, as opposed to the usual hinge type synovial joint.
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There are multiple tarsal coalitions between the talus, calcaneum, navicular and cuboid bones; with visible pes planus.
On the frontal view, the ankle articular surfaces have the appearance of a ball and socket joint, as opposed to the usual hinge type synovial joint.
Case Discussion
A tarsal coalition is a union between two or more of the tarsal bones in the foot. The bridge may be osseous, cartilaginous or fibrous, and can affect various bones.
The prevalence is estimated to be approximately 1-2% and the condition is bilateral in approximately 50%. Pes planus (flat foot) is a frequent feature.
There are several types of tarsal coalition:
- calcaneonavicular
- talonavicular
- talocalcaneal
- calcaneocuboid
In this case, all of the above mentioned are present.
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