Validation of a new method for bone motion measurement by soft-tissue artifact compensation through spatial interpolation

2015 ◽  
Author(s):  
Simon Bouvel ◽  
Viviane Pasqui ◽  
Guillaume Morel
Keyword(s):  
Soft Tissue ◽  
Spatial Interpolation ◽  
New Method ◽  
Motion Measurement ◽  
Soft Tissue Artifact

scholarly journals Bone Pose Estimation in the Presence of Soft Tissue Artifact Using Triangular Cosserat Point Elements

2015 ◽  
Vol 44 (4) ◽  
pp. 1181-1190 ◽  
Author(s):  
Dana Solav ◽  
M. B. Rubin ◽  
Andrea Cereatti ◽  
Valentina Camomilla ◽  
Alon Wolf
Keyword(s):  
Soft Tissue ◽  
Pose Estimation ◽  
Cosserat Point ◽  
Soft Tissue Artifact

Combined use of ultrasonic cavitation and vacuum therapy in compiex treatments of acute puruient-necrotic processes

2014 ◽  
Vol 18 (4 (72)) ◽  
Author(s):  
I. V. Shkvarkovkyi ◽  
T. V. Antoniuk
Keyword(s):  
Wound Healing ◽  
Soft Tissue ◽  
Ultrasonic Cavitation ◽  
New Method ◽  
Vacuum Therapy ◽  
Combined Use

A new method for the treatment of patients with acute purulent necrotic processes by means of ultrasonic cavitation and vacuum therapy has been elaborated. The aim was to study the combined influence of ultrasonic cavitation and vacuum therapy on the course of wound healing. The method complements the treatment of patients with severe purulent necrotic processes of soft tissue.

Can the Effect of Soft Tissue Artifact Be Eliminated in Upper-Arm Internal-External Rotation?

2011 ◽  
Vol 27 (3) ◽  
pp. 258-265 ◽  
Author(s):  
Yanxin Zhang ◽  
David G. Lloyd ◽  
Amity C. Campbell ◽  
Jacqueline A. Alderson
Keyword(s):  
Soft Tissue ◽  
Optimization Model ◽  
External Rotation ◽  
Human Subjects ◽  
Three Dimensional ◽  
Optimization Method ◽  
Upper Arm ◽  
Movement Artifact ◽  
Sinusoidal Pattern ◽  
Soft Tissue Artifact

The purpose of this study was to quantify the effect of soft tissue artifact during three-dimensional motion capture and assess the effectiveness of an optimization method to reduce this effect. Four subjects were captured performing upper-arm internal-external rotation with retro-reflective marker sets attached to their upper extremities. A mechanical arm, with the same marker set attached, replicated the tasks human subjects performed. Artificial sinusoidal noise was then added to the recorded mechanical arm data to simulate soft tissue artifact. All data were processed by an optimization model. The result from both human and mechanical arm kinematic data demonstrates that soft tissue artifact can be reduced by an optimization model, although this error cannot be successfully eliminated. The soft tissue artifact from human subjects and the simulated soft tissue artifact from artificial sinusoidal noise were demonstrated to be considerably different. It was therefore concluded that the kinematic noise caused by skin movement artifact during upper-arm internal-external rotation does not follow a sinusoidal pattern and cannot be effectively eliminated by an optimization model.

Using MR Imaging and X-Ray Fluoroscopy to Quantify the Effects of Soft-Tissue Artifact on Measurement of Knee-Joint Kinematics

2009 ◽  
Author(s):  
Massoud Akbarshahi ◽  
Justin W. Fernandez ◽  
Anthony Schache ◽  
Richard Baker ◽  
Marcus G. Pandy
Keyword(s):  
Soft Tissue ◽  
Knee Joint ◽  
Soft Tissues ◽  
Surgical Techniques ◽  
Joint Kinematics ◽  
Segmental Motion ◽  
Coordinate Systems ◽  
Knee Joint Kinematics ◽  
Soft Tissue Artifact

The ability to accurately measure joint kinematics in vivo is of critical importance to researchers in the field of biomechanics [1]. Applications range from the quantitative evaluation of different surgical techniques, treatment methods and/or implant designs, to the development of computer-based models capable of simulating normal and pathological musculoskeletal conditions [1,2]. Currently, non-invasive marker-based three dimensional (3D) motion analysis is the most commonly used method for quantitative assessment of normal and pathological locomotion. The accuracy of this technique is influenced by movement of the soft tissues relative to the underlying bones, which causes inaccuracies in the determination of segmental anatomical coordinate systems and tracking of segmental motion. The purpose of this study was to quantify the errors in the measurement of knee-joint kinematics due solely to soft-tissue artifact (STA) in healthy subjects. To facilitate valid inter-subject comparisons of the kinematic data, relevant anatomical coordinate systems were defined using 3D bone models generated from magnetic resonance imaging (MRI).

scholarly journals NEW METHOD FOR RESTORATION OF LOWER FACE

2017 ◽  
Vol 21 (4) ◽  
pp. 207-210
Author(s):  
Mikhail Borisovich Shvyrkov
Keyword(s):  
Soft Tissue ◽  
Trauma Surgery ◽  
Functional Results ◽  
New Method ◽  
Minor Trauma ◽  
Soft Tissue Defects ◽  
Lower Face ◽  
Distraction Device ◽  
The Face ◽  
Tissue Defects

Application of the method developed by the author of the restoration of the lower of the face with his proposed technique free osteoplasty of the mandible in conjunction with komressionno-distraction device (KDD) own design allowed simultaneously to replace extensive bone and soft tissue defects immediately after they are lost or in distant time. Minor trauma surgery postoperative high aesthetic and functional results, allows widely recommend this type of plastic in the practice of maxillofacial surgeons.

A Femoral Clamp to Reduce Soft Tissue Artifact: Accuracy and Reliability in Measuring Three-Dimensional Knee Kinematics During Gait

2019 ◽  
Vol 142 (4) ◽  
Author(s):  
Ziyun Ding ◽  
Manuela Güdel ◽  
Samuel H. L. Smith ◽  
Richard A. Ademefun ◽  
Anthony M. J. Bull
Keyword(s):  
Soft Tissue ◽  
Knee Joint ◽  
Degrees Of Freedom ◽  
Intraclass Correlation ◽  
Joint Kinematics ◽  
Cluster Method ◽  
Coefficient Of Determination ◽  
Knee Joint Kinematics ◽  
Soft Tissue Artifact ◽  
Rigid Cluster

Abstract The accurate measurement of full six degrees-of-freedom (6DOFs) knee joint kinematics is prohibited by soft tissue artifact (STA), which remains the greatest source of error. The purpose of this study was to present and assess a new femoral clamp to reduce STA at the thigh. It was hypothesized that the device can preserve the natural knee joint kinematics pattern and outperform a conventional marker mounted rigid cluster during gait. Six healthy subjects were asked to walk barefoot on level ground with a cluster marker set (cluster gait) followed by a cluster-clamp-merged marker set (clamp gait) and their kinematics was measured using the cluster method in cluster gait and the cluster and clamp methods simultaneously in clamp gait. Two operators performed the gait measurement. A 6DOFs knee joint model was developed to enable comparison with the gold standard knee joint kinematics measured using a dual fluoroscopic imaging technique. One-dimensional (1D) paired t-tests were used to compare the knee joint kinematics waveforms between cluster gait and clamp gait. The accuracy was assessed in terms of the root-mean-square error (RMSE), coefficient of determination, and Bland–Altman plots. Interoperator reliability was assessed using the intraclass correlation coefficient (ICC). The result showed that the femoral clamp did not change the walking speed and knee joint kinematics waveforms. Additionally, clamp gait reduced the rotation and translation errors in the transverse plane and improved the interoperator reliability when compared to the rigid cluster method, suggesting a more accurate and reliable measurement of knee joint kinematics.

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