Mathematical reconstruction of human femoral condyles
Date
2011
Authors
Van Den Heever D.J.
Scheffer C.
Erasmus P.
Dillon E.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
There is a direct correlation between ligament function and the articulating surface of the normal knee, and changes to any of these structures can affect the other. This is also true for knee replacements, where the articulating surface is greatly changed compared to the natural knee. This study investigated the morphometry of healthy knees and proposes a method to predict original normal knee profiles. A variety of mathematical techniques are compared in terms of the accuracy with which they can represent the original knee joint geometry. Additionally, a method of predicting the irregular femoral condyle geometry for an individual knee is described by making use of the mathematical techniques presented, and the accuracy of this method is also investigated. The mathematical approach using B-splines provides flexibility and can accurately describe the complex geometry of the femoral condyles in both the sagittal and transverse planes. It was further found that the condyles are highly asymmetrical; therefore simpler methods cannot portray the condyles sufficiently and are especially inaccurate in representing the lateral condyle. The study proposes a method for predicting the geometry of the femoral condyles with good accuracy. The B-spline model showed best results. © 2011 American Society of Mechanical Engineers.
Description
Keywords
femoral condyles, knee morphometry, knee replacement, Articulating surfaces, B splines, B-spline models, Complex geometries, Femoral condyles, Knee joint, Knee replacement, Mathematical approach, Morphometry, Transverse planes, Forecasting, Functions, Geometry, Joints (anatomy), Ship propellers, Splines, Joint prostheses, accuracy, adult, article, cadaver, femur condyle, geometry, human, human tissue, mathematical model, morphometrics, normal human, nuclear magnetic resonance imaging, surface property
Citation
Journal of Biomechanical Engineering
133
6
http://www.scopus.com/inward/record.url?eid=2-s2.0-79959701831&partnerID=40&md5=b58aa4b696dd6829247ce0bf0534a7ac
133
6
http://www.scopus.com/inward/record.url?eid=2-s2.0-79959701831&partnerID=40&md5=b58aa4b696dd6829247ce0bf0534a7ac