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Computed tomography...
Computed tomography analysis of radiostereometric data to determine flexion axes after total joint replacement : Application to the elbow joint
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- Ericson, Anne (författare)
- Karolinska Institutet
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- Olivecrona, Henrik (författare)
- Karolinska Institutet
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- Stark, Andreas (författare)
- Karolinska Institutet
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- Noz, Marilyn E. (författare)
- New York University, Department of Radiology,Nuclear Medicine
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- Maguire Jr., Gerald Q. (författare)
- KTH,Kommunikationssystem, CoS,Computer Communications
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- Zeleznik, Michael P. (författare)
- Saya Systems Inc., Salt Lake City, UT, USA
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- Arndt, Anton (författare)
- Karolinska Institutet
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(creator_code:org_t)
- Elsevier BV, 2010
- 2010
- Engelska.
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Ingår i: Journal of Biomechanics. - : Elsevier BV. - 0021-9290 .- 1873-2380. ; 43:10, s. 1947-1952
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- Kinematic analysis for in vivo assessment of elbow endoprostheses requires knowledge of the exact positions of motion axes relative to bony landmarks or the prosthesis. A prosthesis-based reference system is required for comparison between individuals and studies. The primary aim of this study was to further develop an earlier described algorithm for fusion of radiostereometric analysis (RSA) data and data obtained in 3D computed tomography (CT) for application to the elbow after total joint replacement. The secondary aim was to propose a method for marking of prostheses in 3D CT, enabling definition of a prosthesis-based reference system. Six patients with elbow endoprostheses were investigated. The fusion of data made it possible to visualize the motion axes in relation to the prostheses in the 3D CT volume. The differences between two repeated positioning repetitions of the longitudinal prosthesis axis were less than 0.6 degrees in the frontal and sagittal planes. Corresponding values for the transverse axis were less than 0.6 degrees in the frontal and less than 1.4 degrees (in four out of six less than 0.6 degrees) in the horizontal plane. This study shows that by fusion of CT and RSA data it is possible to determine the accurate position of the flexion axes of the elbow joint after total joint replacement in vivo. The proposed method for implant marking and registration of reference axes enables comparison of prosthesis function between patients and studies.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences (hsv//eng)
Nyckelord
- Radiostereometric analysis
- 3D computed tomography
- Joint visualization
- Elbow prosthesis
- Elbow flexion axes
- Information technology
- Informationsteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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