... manuscript posted October 25, 2012; published online November 27, 2012. Assoc. Editor: Richard E. Debski. 28 03 2012 11 10 2012 25 10 2012 Background: The objectives of this study were to characterize the translational and rotational accuracy of a model-based tracking technique...

... to independent gold standard instrumentation. Static motions were compared to high accuracy linear and rotary stages while dynamic motions were compared to a high accuracy angular displacement transducer. Marker-based tracking was shown to effectively track motion to within 0.1 mm and 0.1 deg under static...

...Seungbum Koo, PhD; Nicholas J. Giori, MD; Garry E. Gold, MD; Chris O. Dyrby; Thomas P. Andriacchi, PhD Cartilage morphology change is an important biomarker for the progression of osteoarthritis. The purpose of this study was to assess the accuracy of in vivo cartilage thickness measurements from...

... on the implant, which constitutes additional manufacturing and certification effort. Model-based RSA (MBRSA) is a method by which pose-estimation of geometric surface-models of the implant is used to detect implant migration. The placement of prosthesis markers is thus no longer necessary. The accuracy...

...Jill M. Brimacombe; David R. Wilson; Antony J. Hodgson; Karen C. T. Ho; Carolyn Anglin Tekscan pressure sensors are used in biomechanics research to measure joint contact loads. While the overall accuracy of these sensors has been reported previously, the effects of different calibration algorithms...

...Laurel Kuxhaus; Patrick J. Schimoler; Jeffrey S. Vipperman; Mark Carl Miller When using optical motion capture systems, increasing the number of cameras improves the visibility. However, the software used to deal with the information fusion from multiple cameras may compromise the accuracy...

.... These shortcomings include incomplete descriptions of scan resolution, processing technique, and accuracy of results. Of these, the accuracy of results is the most important and is addressed in this study by using Fuji film calibration data. In Fuji film calibration, known loads are applied to forms with known area...

...Alison C. Jones; Ruth K. Wilcox This study aimed to establish model construction and configuration procedures for future vertebral finite element analysis by studying convergence, sensitivity, and accuracy behaviors of semiautomatically generated models and comparing the results with manually...

... dynamic shoulder motion to clinically significant levels of accuracy. The purpose of this study was to validate the accuracy of a new model-based tracking technique for measuring three-dimensional, in vivo glenohumeral joint kinematics. We have developed a model-based tracking technique for accurately...

... understanding of whole bone behavior. Microcomputed Tomography Finite Element Method Voxel Size Element Size Boundary Conditions Accuracy Trabecular Bone bone finite element analysis image reconstruction image resolution medical image processing computerised tomography microcomputer...

...Trevor J. Lujan; Spencer P. Lake; Timothy A. Plaizier; Benjamin J. Ellis; Jeffrey A. Weiss The objective of this study was to assess the precision and accuracy of a nonproprietary, optical three-dimensional (3D) motion analysis system for the simultaneous measurement of soft tissue strains...