In this work, MacConaill's classification that the articular surface of the femoral head is better represented by ovoidal shapes rather than purely spherical shapes is computationally tested. To test MacConaill's classification, a surface fitting framework was developed to fit spheres, ellipsoids, superellipsoids, ovoids, and superovoids to computed tomography (CT) data of the femoral proximal epiphysis. The framework includes several image processing and computational geometry techniques, such as active contour segmentation and mesh smoothing, where implicit surface fitting is performed with genetic algorithms. By comparing the surface fitting error statistics, the results indicate that (super)ovoids fit femoral articular surfaces better than spherical or (super)ellipsoidal shapes.
Skip Nav Destination
Article navigation
November 2015
Technical Briefs
Shape Analysis of the Femoral Head: A Comparative Study Between Spherical, (Super)Ellipsoidal, and (Super)Ovoidal Shapes
Daniel Simões Lopes,
Daniel Simões Lopes
Visualization and Intelligent Multimodal Interfaces Group,
INESC ID Lisboa,
Rua Alves Redol, 9,
Lisbon 1000-029, Portugal
e-mail: daniel.lopes@inesc-id.pt
INESC ID Lisboa,
Rua Alves Redol, 9,
Lisbon 1000-029, Portugal
e-mail: daniel.lopes@inesc-id.pt
Search for other works by this author on:
Richard R. Neptune,
Richard R. Neptune
Mem. ASME
Department of Mechanical Engineering,
The University of Texas at Austin,
Austin, TX 78712
e-mail: rneptune@mail.utexas.edu
Department of Mechanical Engineering,
The University of Texas at Austin,
Austin, TX 78712
e-mail: rneptune@mail.utexas.edu
Search for other works by this author on:
Artur A. Gonçalves,
Artur A. Gonçalves
Instituto Superior Técnico,
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: artur.goncalves@tecnico.ulisboa.pt
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: artur.goncalves@tecnico.ulisboa.pt
Search for other works by this author on:
Jorge A. Ambrósio,
Jorge A. Ambrósio
Instituto Superior Técnico,
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: jorge@dem.ist.utl.pt
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: jorge@dem.ist.utl.pt
Search for other works by this author on:
Miguel T. Silva
Miguel T. Silva
Instituto Superior Técnico,
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: MiguelSilva@ist.utl.pt
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: MiguelSilva@ist.utl.pt
Search for other works by this author on:
Daniel Simões Lopes
Visualization and Intelligent Multimodal Interfaces Group,
INESC ID Lisboa,
Rua Alves Redol, 9,
Lisbon 1000-029, Portugal
e-mail: daniel.lopes@inesc-id.pt
INESC ID Lisboa,
Rua Alves Redol, 9,
Lisbon 1000-029, Portugal
e-mail: daniel.lopes@inesc-id.pt
Richard R. Neptune
Mem. ASME
Department of Mechanical Engineering,
The University of Texas at Austin,
Austin, TX 78712
e-mail: rneptune@mail.utexas.edu
Department of Mechanical Engineering,
The University of Texas at Austin,
Austin, TX 78712
e-mail: rneptune@mail.utexas.edu
Artur A. Gonçalves
Instituto Superior Técnico,
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: artur.goncalves@tecnico.ulisboa.pt
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: artur.goncalves@tecnico.ulisboa.pt
Jorge A. Ambrósio
Instituto Superior Técnico,
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: jorge@dem.ist.utl.pt
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: jorge@dem.ist.utl.pt
Miguel T. Silva
Instituto Superior Técnico,
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: MiguelSilva@ist.utl.pt
Universidade de Lisboa,
Avenida Rovisco Pais 1,
Lisbon 1049-001, Portugal
e-mail: MiguelSilva@ist.utl.pt
1Corresponding author.
Manuscript received April 10, 2015; final manuscript received September 13, 2015; published online October 1, 2015. Assoc. Editor: Tammy L. Haut Donahue.
J Biomech Eng. Nov 2015, 137(11): 114504 (8 pages)
Published Online: October 1, 2015
Article history
Received:
April 10, 2015
Revised:
September 13, 2015
Citation
Lopes, D. S., Neptune, R. R., Gonçalves, A. A., Ambrósio, J. A., and Silva, M. T. (October 1, 2015). "Shape Analysis of the Femoral Head: A Comparative Study Between Spherical, (Super)Ellipsoidal, and (Super)Ovoidal Shapes." ASME. J Biomech Eng. November 2015; 137(11): 114504. https://doi.org/10.1115/1.4031650
Download citation file:
Get Email Alerts
Cited By
Optimal Control Formulation for Manual Wheelchair Locomotion Simulations: Influence of Anteroposterior Stability
J Biomech Eng (November 2023)
Related Articles
Automatic Detection of Tangential Discontinuities in Point Cloud Data
J. Comput. Inf. Sci. Eng (June,2008)
The Merits of a Parallel Genetic Algorithm in Solving Hard Optimization Problems
J Biomech Eng (February,2003)
A New Volume Warping Method for Surface Reconstruction
J. Comput. Inf. Sci. Eng (December,2006)
Self-Tuning Extended Kalman Filter Parameters to Identify Ankle's Third-Order Mechanics
J Biomech Eng (January,2021)
Related Chapters
A Study of the Influence of Facial Landmark Mislocalization on Automatic Age Estimation System
International Conference on Software Technology and Engineering, 3rd (ICSTE 2011)
Vibration Analysis of the Seated Human Body in Vertical Direction
International Conference on Computer Technology and Development, 3rd (ICCTD 2011)
Discovering Building Blocks for Human Based Genetic Algorithms
Intelligent Engineering Systems Through Artificial Neural Networks, Volume 17