Which condition typically presents with a widened talonavicular joint on imaging?

The condition that typically presents with a widened talonavicular joint on imaging is tarsal coalition. This abnormal connection between two or more tarsal bones often affects the talus and navicular bones, leading to structural alterations that can be visualized through imaging studies. The coalition can restrict normal motion and lead to compensatory changes in the surrounding joints, including the talonavicular joint. Consequently, this leads to the characteristic widening that can be observed on X-ray or other imaging modalities.

In contrast, lateral ankle sprains primarily involve ligaments and do not typically result in changes to the bony architecture of the talonavicular joint. An Achilles tendon rupture is a tear of the tendon itself and does not affect the talonavicular joint directly. Plantar fasciitis, while it can cause significant foot pain, does not result in noticeable changes to the joint structures in the manner that tarsal coalition does. Therefore, the imaging findings associated with tarsal coalition are distinctive and highlight the joint widening that differentiates it from these other conditions.