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Fig. 1:

1. X-ray of ankle in lateral view
2. Complete destruction of talus. Significant destruction of the lower ends of tibia, fibula, and upper parts of calcaneus and proximal midtarsal bones.
3. There is evidence of osteochondral fragments (arrow head). 

DD 1. Infection in the ankle 2. Charcot joint

Fig. 2:

1. X-ray of ankle in lateral view.
2. There is a fracture in the neck of the talus.

Fig. 3:

1. X-ray of ankle in lateral view.
2. Lower ends of the tibia and upper ends of talus are well seen.
3. The subtalar joint is not well visualized.
4. There is evidence of OA in the talonavicular joint with osteophyte formation.

Imp:       Osteoarthritis talonavicular joint.
Subtalar joint not visualized because of flat feet.

Fig. 4:

1. X-ray of ankle in lateral view.
2. Lower end of tibia is seen.
3. The talus, talonavicular joint, upper part of calcaneus, and bones of the midtarsal joints are indistinct.
4. There is a large area of soft tissue around the joint.
5. There are osteochondral fragments in the soft-tissue.

Imp: Infection of the ankle.