Allow for 5 mm of bone around the final inlay implant 
.
Messieh Tuberosity distance = Major Diam *.69 + 12.8
.

EXAMPLE CASE:



Messieh tuberosity distance of 44 mm measured on preop CT scan or intraoperatively, predicts:
48 mm humeral head major diameter
42 mm minor diameter 
17 mm humeral head radius which is the resection level and also humeral stem sizes 
           3 Flex with 75% DFR
           2 standard or 1 plus long Perform ​
The following are studies, thoughts and ideas. Nothing is validated or peer reviewed. A think tank for discussion and entertainment. Predicted dimensions or sizes or images and drawings are not intended to use or treat. ​
    Messieh inter-tuberosity line

Enter Messieh Tuberosity distance from the preoperative CT scan (mm):


AND enter the cortical wall thickness of humeral canal from the preoperative CT scan (mm):



The 75% DFR estimated size is :

entertainment purposes only. Not validated. each physician must use their judgement. All rights reserved