Classification of O'Driscoll and Morrey for Periprosthetic Fractures About the Elbow (Mayo Classification)

O'Driscoll and Morrey classified fractures about the elbow associated with a elbow prosthesis. The authors are from the Mayo Clinic.

Parameters:

(1) bone involved (humerus or ulna)

(2) region of bone involved

(3) status of prosthesis stem and bone stock

Region of the Bone Involved	Type
periarticular (condyle or epicondyle of humerus; olecranon or coronoid process of ulna)	A
diaphysis around or at tip of the stem	B
diaphysis beyond tip of the stem	C

Status of Stem	Status of Bone	Code
well-fixed	adequate bone quality	1
loose	adequate bone quality	2
NA	severe bone loss or osteolysis	3

fracture type = (region type) + (status code)

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