fractures.. Monteggia fracture. Smith fracture. Colle's fracture. Bennett's fracture

fractures:

a- Monteggia fracture:
ulnar shaft , associated with cortical affection .

b- Smith fracture:
distal radius fracture with dorsal angulation .

c- Colle's fracture:
distal radius fracture with disruption radioulnal joint

d- Bennett's fracture:
a fracture of the proximal end of the first metacarpal without extendion into the first carpo-metacarpal joint.

I know this wrong because he mentioned (without extendion into the first carpo-metacarpal joint) but other choices also were confusing.