title: Effect of the Coonrad elbow prosthesis on stresses in the humerus.
abstract: The mechanical stresses that induce implant loosening or failure in the humerus are investigated in this study using the finite element technique. Using a specially developed casting and sectioning technique, the three-dimensional finite element meshes of an intact humerus and a humerus fitted with a Coonrad prosthesis were obtained from a human cadaver elbow. The most detrimental loads were the anteroposterior compression force and axial torque imposed at the joint surface during activities of daily living. The results also indicated that the cancellous bone and cement regions adjoining the hinge and stem-tip of the prosthesis exhibited higher stresses compared to the intact humerus.
authors.affiliation: Departments of Biomedical Engineering and Orthopaedics, University of Iowa, Iowa City, USA.
authors.forename: V K
authors.initials: VK
authors.lastname: Goel
authors.forename: I K
authors.initials: IK
authors.lastname: Lee
authors.forename: W F
authors.initials: WF
authors.lastname: Blair