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2 results on '"Elbow arthroplasty planning"'

1. Semi-automated stereoradiographic upper limb 3D reconstructions using a combined parametric and statistical model: a preliminary study.

Author

Lebailly, F., Lima, L., Clairemidi, A., Aubert, B., Guerard, S., Chaibi, Y., de Guise, J., Fontaine, C., and Skalli, W.

Subjects
*ELBOW surgery, *EPIPHYSIS, *X-rays, *STATISTICAL models, *TOMOGRAPHY
Abstract

Purpose: Quantitative assessment of 3D clinical indices may be crucial for elbow surgery planning. 3D parametric modeling from bi-planar radiographs was successfully proposed for spine and lower limb clinical investigation as an alternative for CT-scan. The aim of this study was to adapt this method to the upper limb with a preliminary validation. Methods: CT-scan 3D models of humerus, radius and ulna were obtained from 20 cadaveric upper limbs and yielded parametric models made of geometric primitives. Primitives were defined by descriptor parameters (diameters, angles...) and correlations between these descriptors were found. Using these correlations, a semi-automated reconstruction method of humerus using bi-planar radiographs was achieved: a 3D personalized parametric model was built, from which clinical parameters were computed [orientation and projections on bone surface of trochlea sulcus to capitulum (CTS) axis, trochlea sulcus anterior offset and width of distal humeral epiphysis]. This method was evaluated by accuracy compared to CT-scan and reproducibility. Results: Points-to-surface mean distance was 0.9 mm (2 RMS = 2.5 mm). For clinical parameters, mean differences were 0.4-1.9 mm and from 1.7° to 2.3°. All parameters except from angle formed by CTS axis and bi-epicondylar axis in transverse plane were reproducible. Reconstruction time was about 5 min. Conclusions: The presented method provides access to morphological upper limb parameters with very low level of radiation. Preliminary in vitro validation for humerus showed that it is fast and accurate enough to be used in clinical daily practice as an alternative to CT-scan for total elbow arthroplasty pre operative evaluation. [ABSTRACT FROM AUTHOR]

Published
2012
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2. Semi-automated stereoradiographic upper limb 3D reconstructions using a combined parametric and statistical model: a preliminary study

Author

Wafa Skalli, J. A. de Guise, F. Lebailly, Yasmina Chaibi, C. Fontaine, B. Aubert, Luciano Vieira Lima, Sandra Guérard, A. Clairemidi, Laboratoire de biomécanique (LBM), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Sorbonne Paris Cité (USPC)-Université Paris 13 (UP13), Laboratoire de Recherche en Imagerie : Méthodes d'imagerie des Échanges transcapillaires (LRI - EA4062), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Bioingénierie et Bioimagerie Ostéo-articulaires, Biomécanique et Biomatériaux Ostéo-Articulaires (B2OA (UMR_7052)), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-École nationale vétérinaire d'Alfort (ENVA), Université Paris 13 (UP13)-Université Sorbonne Paris Cité (USPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), École nationale vétérinaire - Alfort (ENVA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), École nationale vétérinaire d'Alfort (ENVA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5), Université Paris 13 (UP13) - Université Sorbonne Paris Cité (USPC) - Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12) - Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM) - Université Paris Descartes - Paris 5 (UPD5), Biomécanique et Biomatériaux Ostéo-Articulaires (B2OA), and Université Paris Diderot - Paris 7 (UPD7) - Ecole Nationale Vétérinaire d'Alfort - Centre National de la Recherche Scientifique (CNRS)

Subjects
Male, 0302 clinical medicine, [SPI.MECA.BIOM] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph], Clinical investigation, Image Processing, Computer-Assisted, Quantitative assessment, Medicine, Elbow surgery, Morphological database, Parametric statistics, Aged, 80 and over, Orthodontics, 030222 orthopedics, [SPI.MECA.BIOM]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph], Middle Aged, medicine.anatomical_structure, Parametric model, Upper limb, Female, [SDV.IB]Life Sciences [q-bio]/Bioengineering, Radiology, Anatomy, medicine.medical_specialty, Models, Biological, Pathology and Forensic Medicine, Upper Extremity, 03 medical and health sciences, Imaging, Three-Dimensional, Cadaver, Humans, Radiology, Nuclear Medicine and imaging, Humerus, [PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph], Mécanique: Biomécanique [Sciences de l'ingénieur], Aged, [SDV.IB] Life Sciences [q-bio]/Bioengineering, Models, Statistical, business.industry, [PHYS.MECA.BIOM] Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph], ingénierie bio-médicale [Sciences du vivant], Reproducibility of Results, Statistical model, 030229 sport sciences, CT-scan, Elbow arthroplasty planning, body regions, Surgery, Tomography, X-Ray Computed, business
Abstract

PURPOSE: Quantitative assessment of 3D clinical indices may be crucial for elbow surgery planning. 3D parametric modeling from bi-planar radiographs was successfully proposed for spine and lower limb clinical investigation as an alternative for CT-scan. The aim of this study was to adapt this method to the upper limb with a preliminary validation. METHODS: CT-scan 3D models of humerus, radius and ulna were obtained from 20 cadaveric upper limbs and yielded parametric models made of geometric primitives. Primitives were defined by descriptor parameters (diameters, angles...) and correlations between these descriptors were found. Using these correlations, a semi-automated reconstruction method of humerus using bi-planar radiographs was achieved: a 3D personalized parametric model was built, from which clinical parameters were computed [orientation and projections on bone surface of trochlea sulcus to capitulum (CTS) axis, trochlea sulcus anterior offset and width of distal humeral epiphysis]. This method was evaluated by accuracy compared to CT-scan and reproducibility. RESULTS: Points-to-surface mean distance was 0.9 mm (2 RMS = 2.5 mm). For clinical parameters, mean differences were 0.4-1.9 mm and from 1.7° to 2.3°. All parameters except from angle formed by CTS axis and bi-epicondylar axis in transverse plane were reproducible. Reconstruction time was about 5 min. CONCLUSIONS: The presented method provides access to morphological upper limb parameters with very low level of radiation. Preliminary in vitro validation for humerus showed that it is fast and accurate enough to be used in clinical daily practice as an alternative to CT-scan for total elbow arthroplasty pre operative evaluation.

Published
2012
Full Text
View/download PDF

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