Real-time, interactive, 3-dimensional, computer graphic system for the study of one, two, and three degree-of-freedom joints in rotation

Horng Haur Lin, W. L. Buford, Rita Patterson

Research output: Contribution to journalConference articlepeer-review

Abstract

A system is described which provides for the arbitrary placement of axes of motion with respect to 3-D anatomical (skeletal) structures. The system extends upon earlier work in the interactive, real-time, simulation of musculoskeletal kinematics. Developed in a UNIX RISC platform, the simulation uses PHIGS Extension to X windows (PEX) to define kinematics models and Motif widgets for control of modeling variables through mouse, control dial, and keyboard interaction. Skeletal structures are triangular shaded polygons developed from Computerized Tomography (CT) scans. Rotational axes of motion represented by long, narrow cylindrical vectors are arbitrarily placed and fixed with respect to skeletal landmarks. Subsequent motion of distal bone segments are then controlled, visualized, and studied for verification of joint congruence and realistic placement. This report describes the simulation applied to the three joints of the thumb (up to six degrees of freedom), the wrist, and the knee (two degrees of freedom each).

Original languageEnglish
Pages (from-to)1299-1300
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume17
Issue number2
StatePublished - 1 Dec 1995
EventProceedings of the 1995 IEEE Engineering in Medicine and Biology 17th Annual Conference and 21st Canadian Medical and Biological Engineering Conference. Part 2 (of 2) - Montreal, Can
Duration: 20 Sep 199523 Sep 1995

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