Correct Answer - A
Ans. A: Upper ulnar fracture & dislocated radial head
Monteggia fracture-dislocations are classified by the Bado
system
Bado type I injuries are characterized by a proximal ulnar fracture
with anterior dislocation of the radial head. This is due to a forceful
pronation injury of the forearm and is the most common type.
Bado type II injuries are "reversed" Monteggia fracture-dislocation
injuries.
Here, there is posterior angulation of the ulnar fracture site and
posterior dislocation of the radial head. Bado type III and IV are rare
injuries.