Paper Info
Title
Estimating joint contact areas and ligament lengths from bone kinematics and surfaces
Abstract
We present a novel method for modeling contact areas and ligament lengths in articulations. Our approach uses volume images generated by computed tomography and allows the in vivo and non-invasive study of articulations. In our method bones are modeled both implicitly (scalar dis- tance elds) and parametrically (manifold surfaces). Using this double representation we compute inter-bone distances and estimate joint contact areas. Using the same types of representation we model ligament paths; in our model the ligaments are approximated by shortest paths in a 3D space with bone obstacles. We demonstrate the method by ap- plying our contact area and ligament model to the distal radioulnar joints of a volunteer diagnosed with malunited distal radius fracture in one forearm. Our approach high- lights focal changes in the articulation at the distal radioul- nar joint (location and area of bone contact) and potential soft-tissue constraints (increased 'length' of the distal liga- ments and ligament-bone impingement in the injured fore- arms). Results suggest that the method could be useful in the study of normal and injured anatomy and kinematics of complex joints.
Year
DOI
Venue
2004
10.1109/TBME.2004.826606
IEEE Trans. Biomed. Engineering
Keywords
Field
DocType
computed tomography, contact areas, differential geometry, distance fields, joints, ligament paths
Computer vision,Anatomy,Kinematics,Distal radioulnar joint,Computer science,Forearm,Computed tomography,Artificial intelligence,Biomechanics,Ligament,Contact area,Geometry
Journal
Volume
Issue
ISSN
51
5
0018-9294
Citations 
PageRank 
References 
12
1.30
14
Authors
6
Name
Order
Citations
PageRank
G Elisabeta Marai113620.43
David H. Laidlaw21781234.58
cagatay demiralp379536.82
steven s andrews4121.30
Cindy M. Grimm576377.55
Crisco Joseph J6121.63