Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 28 for “"human knee"”.
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Biomechanical modelling of human knee during living activities
The knee joint is a key structure of the human locomotor system. The knowledge of how each single anatomical structure of the knee contributes to determine the physiological function of the knee, is of fundamental importance for the development of new prostheses and novel clinical, surgical, and …
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Load-bearing role of the human knee meniscus
Thesis (Ph. D.)--Harvard University--Massachusetts Institute of Technology Division of Health Sciences and Technology, Program in Medical Engineering and Medical Physics, 1990.
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A three dimensional mathematical model of the human knee
… the indeterminate problem. In the case of the knee joint direct comparisons of results between several optimization methods proposed in the literature presents difficulties due to largely varying model formulation, input data, algorithms and other issues. The application presented here …
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Geometry and the kinematics of the normal human knee
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990.
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Squeeze-film flows, with application to the human knee joint
… interpreted in the context of lubrication in the human knee joint, and some conclusions are drawn about the contact time of the cartilage-coated femoral condyles and tibial plateau and the penetration of nutrients into the cartilage.
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A three-dimensional mathematical model of the human knee joint
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990.
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A new approach for the dynamic modelling of the human knee
Mathematical models of the knee joint are important tools which have both theoretical and practical applications. They are used by researchers to fully understand the stabilizing role of the components of the joint, by engineers as an aid for prosthetic design, by surgeons during the planning of an …
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A study of the medial collateral ligament of the human knee joint
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
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Human Knee FEA Model for Transtibial Amputee Tibial Cartilage Pressure in Gait and Cycling
… gait and cycling experiments. The resultant knee loads were analyzed to find the maximum compressive load and the respective shear forces and rotation moments for each trial, which were then applied to the model. Maximum tibial contact stress values were extracted for both the medial and …
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Computational Modeling of the Helical Axis in the Human Knee--Detecting Changes in the Transverse Plane
… axis intersection of the tibia and femur in human knees. This algorithm was designed and tested using three models: a multiplanar rigid body model, a mathematical model, and a cylinder model. The multiplanar rigid body model closely mimics knee movement without supporting ligamentous …
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In vivo Sub-regional dGEMRIC Analysis and Contrast Distribution in Clinical Studies of Human Knee Cartilage
… MRI measurements were performed in femoral knee cartilage pre- & post-injection of Gd-DTPA2-. Depth-wise times p.i. depending on the study group. Results: Studies I and II: before contrast injection, T1 was higher in the superficial region than in the deep regions of the cartilage. Bulk …
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Optimization of ligament parameters on a subject-specific computational human knee model in a dynamic knee simulator using design of experiments
… three dimensional subject-specific computational knee model. The parameters of interest are the zero load length (lambda sub zero), stiffness (k) and the strain level where the force length relationship of the ligament goes from the nonlinear "toe" region to the linear region (epsilon sub l). …
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The Roles of the Normal Mechanical Properties of Articular Cartilage in the Contact Mechanics of the Human Knee Joint: a Finite Element Approach
… fluid pressure in an anatomically accurate knee joint model. Including the fluid phase as a cartilage constituent, this thesis investigated the mechanics of human knee joint. The main hypothesis of this thesis was that the depth-wise integrity of the structure of cartilage has an important …
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A model of muscle-tendon function in human walking
… the design of legged machines that walk as humans do, this thesis investigates how leg muscles and tendons work mechanically during level-ground human walking at self-selected speeds. I hypothesize that quasi- passive, series-elastic clutch units spanning the knee joint in a musculoskeletal …
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Three-dimensional image reconstruction of skeletal tissue from computed tomography
… three dimensional image reconstruction of the human knee, starting from computed tomography scans. Designing a digital image processing technique which successfully separates the bone from the surrounding flesh and muscle tissue is the main focus of the thesis. We use edge detection procedures …
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Design of a Cyclic Sliding, Dynamically Loaded Wear Testing Device for the Evaluation of Total Knee Replacement Materials
During normal walking, the relative motion of the human knee involves flexion/extension, anterior/posterior sliding, and medial/lateral rotation. As well, the knee experiences a complex, dynamic loading curve with a peak of up to seven times body weight. However, most wear testing machines that …
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Skin strain analysis software for the study of human skin deformation
… Interfaces that have the same strain behavior as human skin can minimize shear forces and discomfort for the user. One particular application is improving the design of prosthetic liners for amputees, creating a second skin sleeve that provides support without hindering movement. A custom approach …
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Development of a 6-DOF robotic test system for studying the biomechanics of total knee replacement
… system for studying the biomechanics of Total Knee Arthroplasty (TKA) was developed in this project. The system is composed of a 6 Degree-of-Freedom (DOF) robotic manipulator (Kawasaki UZ150(TM) and a 6-DOF universal force-moment sensor (JR3[TM]). This testing system offers the ability to …
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Aggrecan fragments as biomarkers in osteoarthritis
… potential of aggrecan fragments as biomarkers in knee OA. Methodology/Principal findings: Using neoepitope specific antibodies in Western blots, aggrecan fragments were identified in knee cartilage and synovial fluid (SF) pooled from individuals with a wide spectrum of disease. Aggrecanases were …
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Analysis and optimization of passive knee prosthetic design parameters over varying cadences
… GEAR Lab is addressing this gap through the ATKnee, a low-cost, passive prosthetic knee that employs the use of spring and damper components to replicate the knee torque of the able-bodied human knee. In this study, we build upon prior work to optimize the components used in the ATKnee by …
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