39. www.wrightington.com
Jupiter Classification of Type II
Fractures
IIa Coronoid level
IIb Metaphyseal/
Diaphyseal junction
IIc Distal to coronoid
IId Fracture extending to
distal 1/2 ulna
40
40. www.wrightington.com
Ring Classification
Type I
Apex anterior diaphyseal ulna fracture with anterolateral
dislocation of radiocapitellar and PRUJ
Type II
Metaphyseal buckle fractures with anterolateral
radiocapitellar dislocation (paediatric only)
Type III
Apex posterior ulna fractures with posterior dislocation
radiocapitellar joint
41
60. www.wrightington.com
63
Outcome Monteggia Fractures
Anterior (Bado I, Ring I)
good outcomes
less likely to involve radial head or coronoid
Posterior (Bado II, Ring III)
poor
worse if unstable coronoid fracture present (Jupiter IIa)
coronoid / radial head fractures and re-operation
associated with poorer outcome.