Knee simulation has been used as the primary tool in the estimation of knee flexion–extension levels for many years. This paper discusses the suitability of AdamsView simulation tool for estimating the flexion–extension angles in the knee joint, i.e. three versions namely: 3D reconstructed knee joint, standard artificial knee joint and artificial high flexion knee joint. The high flexion artificial knee joint model reaches a maximum flexion up to 120.2°. Whereas the standard knee Joint gets about 84.6°. However, the 3D reconstructed knee joint was capable of producing 134.4°. Thus the usage of the mechanical simulation tools in the medical applications has been proved once again.

Prasanna S

Department of Digital Communications

School of Information Technology and Engineering

Vellore Campus

Sivarasu S

Mathew L.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Knee kinematics simulation and comparative flexion angle analysis of reconstructed knee versus standard artificial knee versus high flexion artificial knee

International Journal of Modeling, Simulation, and Scientific Computing

KNEE KINEMATICS SIMULATION AND COMPARATIVE FLEXION ANGLE ANALYSIS OF RECONSTRUCTED KNEE VERSUS STANDARD ARTIFICIAL KNEE VERSUS HIGH FLEXION ARTIFICIAL KNEE

Total Knee Arthroplasty (TKA) using standard artificial knee implant has a limitation in restriction in the range of motion and freedom of movements'. This study was worked out to compare the kinematics of a reconstructed 3D knee with standard and high flexion artificial knee designs. A CT bone model reconstructed with MIMICS for a 3D normal knee joint and the simulation was done for normal knee, standard version of artificial knee as well as the high flexion knee designs. The results of the analyses, provides us an insight that high flexion designs were most suited and gives increased range of motion and also provides an additional degree of freedom so that it almost mimics the normal knee movement. The high flexion design when tested under simulated environment provided a better functionality and increased movements. It was concluded that the normal knee has 6 degrees of freedom (DOF); the standard version has 1 rotation and 1 translation. The high flexion design provides 2 rotations and 1 translation.

Biomedical Engineering: Applications, Basis and Communications

COMPARATIVE KINEMATIC ANALYSIS OF THE RANGE OF MOVEMENT OF A NORMAL HUMAN KNEE JOINT, STANDARD ARTIFICIAL KNEE AND NOVEL ARTIFICIAL HIGH FLEXION KNEE

Total knee arthroplasty (TKA) has been the end-time surgical procedure for pain relief and movement restoration in cases of severe arthritis. The knee implant design plays a vital role in deciding the activity levels of a patient after total knee replacement (TKR). In about 90% of younger patients undergoing the knee replacement surgeries, the restriction is not from the subject but from the implant design. This paper discusses parameters affecting the activity levels after TKR. It also briefs the design aspects of a novel knee design that allows the normal high flexion activity even after TKR. The application of finite element modeling in medical applications has been evolving as the field of high importance especially in the development of medical devices. The TKA has been in existence for over six decades till now. The generic artificial knee implants used in the TKA have the restriction in its range of motion of about 90°. A new design allowing flexion extension range of over 120° was designed with a view to facilitate partial squatting and the same is used for the analysis purpose. The loading conditions of 10 times the body weight are considered. The finite element analyses of the designs were carried out based on standard biomaterial used in orthopedic implants. In this paper, we have discussed the results of analyses of an artificial knee with titanium (Ti) alloy. The results of the analyses were used in identifying areas of extreme stresses within the design and the spot prone for higher deformation. Based on these results, slight modification on the designs was carried out. The results are also verified whether the body is within the linear deformation levels. As the results obtained were very satisfactory, the models have been recommended for prototyping.

KINEMATIC ANALYSIS AND 3D FINITE ELEMENT ANALYSIS OF A MOBILE-BEARING ARTIFICIAL HIGH FLEXION KNEE

Fulltext

Applied Bionics and Biomechanics

Finite-element-based design optimisation of a novel high flexion knee used in total knee arthroplasty

IFMBE Proceedings 13th International Conference on Biomedical Engineering

Artificial High — Flexion Knee Customized for Eastern Lifestyle

Journal	International Journal of Modeling, Simulation, and Scientific Computing
Publisher	World Scientific Pub Co Pte Lt
ISSN	1793-9623
Open Access	0