Proximal humeral ... Two-part fractures involve any of the 4 parts and include 1 fragment that is displaced. Three-part fractures include a displaced fracture of the surgical neck in addition ...

In 2-part fractures, one block is the humeral head and the other block is the diaphysis, and they are separated by a fracture usually around the neck of ... older who have comminuted C-type ...

In a displaced fracture, the bone snaps into two or more parts and moves so that the two ends are not lined up straight. If the bone is in many pieces, it is called a comminuted fracture.

These radiographs reveal a mildly displaced, comminuted spiral fracture at the distal diaphysis of the left humerus with an associated butterfly fragment (Fig. 1). The patient, a healthy recreational ...