Seventy-six cadaveric humeri were investigated to study the three-dimensional morphometric data
based on CT data. The present study was an advanced method to determine the 3D proximal humeral parameters
for both intra and extra geometries through the utilization of medical imaging and reverse engineering
techniques. The following parameters were calculated for each humerus and then compared with the 3D
Caucasian data such as diameter of humeral head, articular surface thickness, inclination angle, retroversion
angle, medial offset, posterior offset, curve length, radius of curvature, and mediolateral angle. It was found
that the Thai humeral parameters were smaller than Caucasian except the retroversion angle and posterior
offset. This data could be further used to develop a proper design of shoulder arthroplasty for Thai patients.

Keywords: Cadaver, Morphometric, Proximal humerus, Three-dimensional model