Estimation Of Knee Ligaments Loads Using The
Modelling Approach Applied On In-vivo Accurate
Kinematics And Morphology Of A Young Subject
Author(s)
R. Stagni, S. Fantozzi, M. Lannocca, L. Bertozzi & A. Cappello
Abstract
The knee joint is a key structure of the human locomotor system. Any lesion or
pathology compromising its mobility and stability alters its function. As direct
measurements of the contribution of each anatomical structure to the joint
function are not viable, modelling techniques must be applied. The present study
is aimed at evaluating the importance of anatomical twist in the determination of
mechanical stabilising action of the cruciate ligaments during the execution of a
daily living activity. For this purpose accurate parameters from nuclear magnetic
resonance and 3D-fluoroscopy of a single selected subject during chair risingsitting
motor task were used. The modelling of the twist of fibres was
fundamental in the determination of the specific behaviour of the posterior
cruciate ligament in particular.
Keywords: knee model, ligaments, mechanical simulation, 3D fluoroscopy,
magnetic resonance.
1 Introduction
The knee plays a fundamental role in determining the human locomotor ability.
Any alteration of its anatomical structures can compromise its function. The
development of effective methods for surgical reconstruction and rehabilitation
is of great clinical interest, regarding both joint replacement and surgical
reconstruction of the main anatomical structures. This interest is demonstrated by
the 259000 total knee replacements, 25000 ligaments reconstructions and 15000
other repairs of the knee performed in the USA in 1997 as reported by the
American Association of Orthopaedic Surgeons (AAOS). For the development
of these procedures, an accurate knowledge of the mobility and stability of the
Keywords
knee model, ligaments, mechanical simulation, 3D fluoroscopy,
magnetic resonance.
Related Book
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