Three-Dimensional Morphometric Study of the Thai Proximal Humerus: Cadaveric Study
Panya Aroonjarattham D Eng*, Pongnarin Jiamwatthanachai M Eng*, Banchong Mahaisavariya MD**, Thanya Kiatiwat PhD*, Kitti Aroonjarattham MD***, Kriskrai Sitthiseripratip D Eng****
Affiliation : * Faculty of Engineering, Kasetsart University, Bangkok, Thailand ** Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand *** Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand **** National Metal and Materials Technology Center, Pathumthani, Thailand
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
