Inversion injury at the ankle can cause all of the following except -: (A) Fracture tip of lateral melleolus, (B) Fracture base of the 5th metatarsal, (C) Sprain of Ext. Digitorum brevis, (D) Fracture of sustentaculam tali
Answer is C. Structures damaged due to inversion injury

Peroneal tendon injury.
Avulsion fracture of tip of lateral malleolus.
Avulsion fracture of anterolateral surface of talus & calcaneum (sustentaculum tali).
Fracture of base of 5th metatarsal.
Lateral collateral ligament injury (anterior tato fibular > calcaneofibular > posterior- talofibular ligament).
Medial malleolus fracture.