"type I: transverse coronoid tip fractures, which affect one-third of the process"
"type II: injuries involve the anteromedial facet, with subtypes varying according to the fracture's location along the facet and the sublime tubercle's degree of involvement"
"type III: involve the coronoid process base, with disruption of more than 50% of the coronoid body"
"Small type I injuries can be treated non-operatively if stability is maintained; however, if these fractures are associated with instability, it requires surgical repair 1-4. In general coronoid process fractures, type II and III require surgical repair to maintain elbow stability, and the surgical approach varies by fracture type 1-4."