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Low-field magnetic resonance imaging offers potential for measuring tibial component migration.

Author
Abstract
:

Roentgen stereophotogrammetric analysis (RSA) is used to measure early prosthetic migration and to predict future implant failure. RSA has several disadvantages, such as the need for perioperatively inserted tantalum markers. Therefore, this study evaluates low-field MRI as an alternative to RSA. The use of traditional MRI with prostheses induces disturbing metal artifacts which are reduced by low-field MRI. The purpose of this study is to assess the feasibility to use low-field (0.25 Tesla) MRI for measuring the precision of zero motion. This was assessed by calculating the virtual prosthetic motion of a zero-motion prosthetic reconstruction in multiple scanning sessions. Furthermore, the effects of different registration methods on these virtual motions were tested.

Year of Publication
:
2018
Journal
:
Journal of experimental orthopaedics
Volume
:
5
Issue
:
1
Number of Pages
:
4
Date Published
:
2018
URL
:
https://dx.doi.org/10.1186/s40634-017-0116-2
DOI
:
10.1186/s40634-017-0116-2
Short Title
:
J Exp Orthop
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