The lateral ankle image shows mildly displaced fracture of the anterior process of calcaneus.

The injury results from avulsion of the bifurcate ligament following an inversion & plantar flexion of the foot.

This is a missable injury. Particular attention should be paid to the anterior aspect of the calcaneus on lateral views of the ankle.

Further reading including management aspect can be found here: https://www.orthobullets.com/trauma/1051/calcaneus-fractures