Three Part Fracture Dislocation of the Shoulder Wheeless

Description: - includes large proximal fragment created by frx of surgical neck of humerus;
- some capsular tissue is almost always retained on large head fragment ensuring its viability;
- if head fragment is displaced anteriorly, greater tuberosity is usually frxed, whereas lesser tuberosity is retained;
- frxed tuberosity segment is always displaced in a direction opposite to the dislocation;
- in posterior fracture dislocation, greater tuberosity is usually retained, whereas the lesser tuberosity is avulsed
Wheeless' Textbook of Orthopaedics