A Deformable Statistical Shape Model Applied to Three-Dimensional Lumbar Vertebra Images

We studied the three-dimensional (3-D) shape variations and symmetry of the lunate to evaluate whether a contralateral shape-based approach to design patient-specific implants for treatment of Kienböck’s disease is accurate. A 3-D statistical shape model of the lunate was built using the computed tomography scans of 54 lunate pairs and shape symmetry was evaluated based on an intraclass correlation analysis. The lunate shape was not bilaterally symmetrical in (1) the angle scaphoid surface – radius-ulna surface, (2) the dorsal side and the length of the side adjacent to the triquetrum, (3) the orientation of the volar surface, (4) the width of the side adjacent to the scaphoid, (5) the skewness in the coronal plane and (6) the curvature of bone articulating with the hamate and capitate. These findings suggest that using the contralateral lunate to design patient-specific lunate implants may not be as accurate as it is intended.

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Three-dimensional MRI-based statistical shape model and application to a cohort of knees with acute ACL injury

Osteoarthritis and Cartilage ◽

10.1016/j.joca.2015.05.027 ◽

2015 ◽

Vol 23 (10) ◽

pp. 1695-1703 ◽

Cited By ~ 29

Author(s):

V. Pedoia ◽

D.A. Lansdown ◽

M. Zaid ◽

C.E. McCulloch ◽

R. Souza ◽

...

Keyword(s):

Three Dimensional ◽

Acl Injury ◽

Statistical Shape Model ◽

Shape Model ◽

Statistical Shape

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Prediction of normal bone anatomy for the planning of corrective osteotomies of malunited forearm bones using a three-dimensional statistical shape model

Journal of Orthopaedic Research® ◽

10.1002/jor.23576 ◽

2017 ◽

Vol 35 (12) ◽

pp. 2630-2636 ◽

Cited By ~ 10

Author(s):

Flavien Mauler ◽

Christoph Langguth ◽

Andreas Schweizer ◽

Lazaros Vlachopoulos ◽

Tobias Gass ◽

...

Keyword(s):

Three Dimensional ◽

Statistical Shape Model ◽

Shape Model ◽

Normal Bone ◽

Statistical Shape ◽

Forearm Bones

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A three-dimensional statistical shape model of the growing mandible

Scientific Reports ◽

10.1038/s41598-021-98421-x ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

C. Klop ◽

A. G. Becking ◽

C. Klop ◽

J. H. Koolstra ◽

N. H. J. Lobé ◽

...

Keyword(s):

Maxillofacial Surgery ◽

Three Dimensional ◽

Principal Component ◽

Statistical Shape Model ◽

Total Variance ◽

Oral And Maxillofacial Surgery ◽

Data Set ◽

Shape Model ◽

Computed Tomography Scanning ◽

Statistical Shape

AbstractMandibular growth and morphology are important topics in the field of oral and maxillofacial surgery. For diagnostic and planning purposes, a normative database or statistical shape model of the growing mandible can be of great benefit. A collection of 874 cadaveric children’s mandibles with dental age between 1 and 12 years old were digitized using computed tomography scanning and reconstructed to three-dimensional models. Point correspondence was achieved using iterative closest point and coherent point drift algorithms. Principal component analysis (PCA) was applied to find the main modes of variation in the data set. The average mandible was presented, along with the first ten PCA modes. The first mode explained 78% of the total variance; combining the first ten modes accumulated to 95% of the total variance. The first mode was strongly correlated with age and hence, with natural growth. This is the largest study on three-dimensional mandibular shape and development conducted thus far. The main limitation is that the samples lack information such as gender and cause of death. Clinical application of the model first requires validation with contemporary samples.

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