Determining Dual Euler Angles of the Ankle Complex in vivo Using “Flock of Birds” Electromagnetic Tracking Device

2005 ◽  
Vol 127 (1) ◽  
pp. 98-107 ◽  
Author(s):  
Ning Ying ◽  
Wangdo Kim
Keyword(s):  
Three Dimensional ◽  
Euler Angles ◽  
Joint Motion ◽  
Electromagnetic Tracking ◽  
Kinematic Coupling ◽  
Alternative Approach ◽  
Ankle Complex ◽  
Coupling Characteristics ◽  
Tracking Device

The dual Euler angles method has been proposed as an alternative approach to describe the general spatial human joint motion. In this study, the dual Euler angles method was applied to study the three-dimensional motion of the ankle complex. The methodology for obtaining dual Euler angles of the ankle complex was developed by using a “Flock of Birds” electromagnetic tracking device. The repeatability of the methodology was studied based on the intertester and intratester variability analysis. Finally kinematic coupling characteristics of the ankle complex during dorsiflexion–plantarflexion, eversion–inversion, and abduction–adduction were analyzed according to the parameters of the dual Euler angles.

Three-Dimensional in Vivo Kinematics of the Shoulder during Humeral Elevation

1998 ◽  
Vol 14 (3) ◽  
pp. 312-326 ◽  
Author(s):  
Timothy J. Koh ◽  
Mark D. Grabiner ◽  
John J. Brems
Keyword(s):  
Video Analysis ◽  
Three Dimensional ◽  
Movement Pattern ◽  
Helical Axis ◽  
Euler Angles ◽  
In Vivo Kinematics ◽  
Shoulder Complex ◽  
Shoulder Motion ◽  
Shoulder Kinematics

Shoulder kinematics, including scapular rotation relative to the trunk and humeral rotation relative to the scapula, were examined during humeral elevation in three vertical planes via video analysis of intracortical pins. Helical axis parameters provided an easily interpretable description of shoulder motion not subject to the limitations associated with Cardan/Euler angles. Between 30 and 150° of elevation in each plane, the scapula rotated almost solely about an axis perpendicular to the scapula. Additional scapular rotation appeared to support the notion that the scapula moves “toward” the plane of elevation. Humeral rotation took place mainly in the plane of the scapula independent of the plane of elevation. Many parameters of shoulder complex kinematics were quite similar across all planes of elevation, suggesting a consistent movement pattern with subtle differences associated with the plane of elevation.

Three-Dimensional Kinematic Modelling of the Human Shoulder Complex—Part II: Mathematical Modelling and Solution Via Optimization

1989 ◽  
Vol 111 (2) ◽  
pp. 113-121 ◽  
Author(s):  
S. T. Tu¨mer ◽  
A. E. Engin
Keyword(s):  
Optimization Problem ◽  
Kinematic Model ◽  
Three Dimensional ◽  
Joint Motion ◽  
Upper Arm ◽  
Complex Part ◽  
Kinematic Modelling ◽  
Shoulder Complex ◽  
The Individual

In this paper, individual joint sinus cones associated with the sternoclavicular, claviscapular, and glenohumeral joints of the three-dimensional kinematic model introduced in Part I for the human shoulder complex are quantitatively determined. First, mathematical description of the humerus orientation with respect to torso is given in terms of eight joint variables. Since the system is a kinematically redundant one, solution for the joint variables satisfying a prescribed humerus orientation is possible only if additional requirements are imposed; and the “minimum joint motion” criterion is introduced for this purpose. Two methods, namely the Lagrange multipliers and flexible tolerance methods, are formulated and tested for the optimization problem. The statistical in-vivo data base for the circumductory motion of the upper arm is employed to determine a set of joint variables via optimization, which are then utilized to establish the sizes and orientations of the elliptical cones for the individual joint sinuses. The results are discussed and compared with those given on the basis of measurements made on cadaveric specimens.

Factors Influencing Accuracy of Screw Displacement Axis Detection With a D.C.-Based Electromagnetic Tracking System

1998 ◽  
Vol 120 (3) ◽  
pp. 431-435 ◽  
Author(s):  
M. Bottlang ◽  
J. L. Marsh ◽  
T. D. Brown
Keyword(s):  
Motion Tracking ◽  
Tracking System ◽  
Three Dimensional ◽  
Joint Motion ◽  
Electromagnetic Tracking ◽  
Source Data ◽  
Surgical Setting ◽  
Smoothing Procedure ◽  
Electromagnetic Tracking System ◽  
Single Receiver

Recent technical improvements and cost reductions in electromagnetic motion tracking systems invite their application to motion axis determination in the surgical setting. After evaluation of the accuracy of a state-of-the-art D. C. electromagnetic tracking system, which generates complete three-dimensional kinematic outputs from just a single receiver, we calculated screw displacement axes (SDA’s) from its source data. The accuracy of SDA determination from such source data was evaluated for various rotational increment sizes around a revolute joint. A novel smoothing procedure, customized for this type of source data, was developed, enabling SDA detection from incremental rotations of less than 1 deg, at an accuracy appropriate for intra-operative measurement of human joint motion. Examples of SDA determination are given for motion tracking of a ball joint and of the elbow articulation.

Three-Dimensional Endovascular Navigation With Electromagnetic Tracking: Ex Vivo and In Vivo Accuracy

2011 ◽  
Vol 18 (2) ◽  
pp. 230-240 ◽  
Author(s):  
Frode Manstad-Hulaas ◽  
Geir Arne Tangen ◽  
Lucian Gheorghe Gruionu ◽  
Petter Aadahl ◽  
Toril A. N. Hernes
Keyword(s):  
Ex Vivo ◽  
Three Dimensional ◽  
Electromagnetic Tracking ◽  
Endovascular Navigation

In vivo analysis of acromioclavicular joint motion after hook plate fixation using three-dimensional computed tomography

2015 ◽  
Vol 24 (7) ◽  
pp. 1106-1111 ◽  
Author(s):  
Yoon Sang Kim ◽  
Yon-Sik Yoo ◽  
Seong Wook Jang ◽  
Ayyappan Vijayachandran Nair ◽  
Hyonki Jin ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Acromioclavicular Joint ◽  
Plate Fixation ◽  
Three Dimensional ◽  
Hook Plate ◽  
Joint Motion ◽  
In Vivo Analysis

Reliability and Precision of in Vivo Scapular Kinematic Measurements Using an Electromagnetic Tracking Device

2006 ◽  
Vol 15 (2) ◽  
pp. 125-143 ◽  
Author(s):  
Joseph Myers ◽  
John Jolly ◽  
Takashi Nagai ◽  
Scott Lephart
Keyword(s):  
Outcome Measures ◽  
High Reliability ◽  
Intraclass Correlation ◽  
Human Movement ◽  
Published Data ◽  
Electromagnetic Tracking ◽  
Scapular Kinematics ◽  
The Mean ◽  
Tracking Device

Context:In vivo scapular kinematics during humeral movements are commonly assessed with electromagnetic tracking devices despite few published data related to reliability and precision of these measurements.Objective:To determine the intrasession reliability and precision of assessing scapular kinematics using an electromagnetic tracking device.Design:Scapular position and orientation were measured with an electromagnetic tracking device during humeral elevation/depression in several planes. Intrasession reliability and precision were established by comparing 2 trials performed in succession.Setting:A human-movement research laboratory.Participants:15 healthy individuals.Main Outcome Measures:Intrasession intraclass correlation coefficients and standard error of measurement of all scapular variables were established.Results:The mean intrasession reliability for all variables was ICC = .97 ± .03. The mean intrasession precision was .99° ± .36°.Conclusions:In vivo scapular kinematics can be measured with high reliability and precision during intrasession research designs.

Reliability And Precision Of In-vivo Scapular Kinematic Measurements Using An Electromagnetic Tracking Device

2005 ◽  
Vol 37 (Supplement) ◽  
pp. S120
Author(s):  
Joseph Myers ◽  
John Jolly ◽  
Takashi Nagai ◽  
Scott Lephart
Keyword(s):  
Electromagnetic Tracking ◽  
Tracking Device
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