Treffer: An interactive three-dimensional computer graphic simulation of the upper extremity

Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. ; Includes bibliographical references (leaves 43-49). ; A three-dimensional computer graphic simulation which hics. allows for the arbitrary placement of axes of motion with respect to skeletal structures is described. The simulation, developed on a Sum UItraSPARC high performance workstation integrated with an Evans and Sutherland graphics accelerator, uses OpenGL and C programming software within the UNIX X Windows environment. The three-dimensional bone structures are triangular polygons derived from computerized tomography scans. Each axis of rotation is represented symbolically by a long narrow cylindrical tube with a wire sphere located at its midpoint. The bony structures can be rotated around these axes. This thesis develops the foundation of the computer program, a three-dimensional, interactive, kinematic, real-time, computer graphic simulation of the upper extremity skeletal structures that allows for the arbitrary orientation and placement of up to three independent axes of rotation for each joint.