Refer for:
Comminution
Malrotation
Intraarticular fracture
Displaced or angulated fractures that cannot maintain their reduction
Most spiral and oblique fracture (usually involve rotation or shortening and are unstable)
Comminution
Malrotation
Intraarticular fracture
Displaced or angulated fractures that cannot maintain their reduction
Most spiral and oblique fracture (usually involve rotation or shortening and are unstable)
Middle phalanx 
Non-thumb metacarpal fractures
Proximal phalanx 
Head
Distal phalanx 
Neck
Finger 
Shaft