Difference between revisions of "X-ray of scapholunate instability"
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|author1=[[User:Mikael Häggström|Mikael Häggström]] | |author1=[[User:Mikael Häggström|Mikael Häggström]] | ||
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==Planning== | ==Planning== | ||
| − | + | Required projections are posterior anterior (PA), a lateral view X-ray, and then either fist view X-ray<ref name="RANovelline">{{Cite book|last=Novelline|first=RA|title= Squire's fundamentals of radiology, 6th Edition | |
| − | |publisher= President and fellows of Harvard college|location= United States of America|year=2004|edition=6th|isbn=0-674-01279-8}}</ref> | + | |publisher= President and fellows of Harvard college|location= United States of America|year=2004|edition=6th|isbn=0-674-01279-8}}</ref> or X-rays in ulnar and radial deviation. |
| − | == | + | ==Evaluation== |
| − | + | Measure the ''scapholunate distance''. A distance of more than '''3 mm''', which is called ''scapholunate dissociation''.<ref>{{cite web|url=https://radiopaedia.org/articles/scapholunate-interval|title=Scapholunate advanced collapse|author=Owen Kang and Henry Knipe et al.|website=[[Radiopaedia]]|accessdate=2018-01-05}}</ref> A ''static'' instability is generally readily visible, but a ''dynamic'' scapholunate instability can only be seen radiographically in certain wrist positions or under certain loading conditions, such as when clenching the wrist, or loading the wrist in ulnar deviation.<ref name="FairplayCozzolino2013">{{cite journal|last1=Fairplay|first1=Tracy|last2=Cozzolino|first2=Roberto|last3=Atzei|first3=Andrea|last4=Luchetti|first4=Riccardo|title=Current Role of Open Reconstruction of the Scapholunate Ligament|journal=Journal of Wrist Surgery|volume=02|issue=02|year=2013|pages=116–125|issn=2163-3916|doi=10.1055/s-0033-1343092}}</ref> | |
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File:X-ray of dynamic scapholunate instability - annotated.jpg|Dynamic instability: Increased scapholunate distance (between yellow lines) upon ulnar deviation of the wrist, but not otherwise. | File:X-ray of dynamic scapholunate instability - annotated.jpg|Dynamic instability: Increased scapholunate distance (between yellow lines) upon ulnar deviation of the wrist, but not otherwise. | ||
File:Dynamic_S-L-grip.jpg|Dynamic scapholunate instability visible upon clenching the wrist | File:Dynamic_S-L-grip.jpg|Dynamic scapholunate instability visible upon clenching the wrist | ||
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</gallery> | </gallery> | ||
| − | == | + | ==Report== |
| − | {{ | + | *Presence or absence of scapholunate dissociation. If present, specify if it is static, or in which positions it appears. |
| + | {{Reporting}} | ||
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Latest revision as of 16:23, 18 March 2019
Author:
Mikael Häggström [notes 1]
Contents
Planning
Required projections are posterior anterior (PA), a lateral view X-ray, and then either fist view X-ray[1] or X-rays in ulnar and radial deviation.
Evaluation
Measure the scapholunate distance. A distance of more than 3 mm, which is called scapholunate dissociation.[2] A static instability is generally readily visible, but a dynamic scapholunate instability can only be seen radiographically in certain wrist positions or under certain loading conditions, such as when clenching the wrist, or loading the wrist in ulnar deviation.[3]
Static scapholunate dissociation
Dynamic instability: Increased scapholunate distance (between yellow lines) upon ulnar deviation of the wrist, but not otherwise.
Dynamic scapholunate instability visible upon clenching the wrist
Report
- Presence or absence of scapholunate dissociation. If present, specify if it is static, or in which positions it appears.
- See also: General notes on reporting
Notes
- ↑ For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Radlines:Authorship for details.
References
- ↑ Novelline, RA (2004). Squire's fundamentals of radiology, 6th Edition (6th ed.). United States of America: President and fellows of Harvard college. ISBN 0-674-01279-8.
- ↑ Owen Kang and Henry Knipe et al.. Scapholunate advanced collapse. Radiopaedia. Retrieved on 2018-01-05.
- ↑ Fairplay, Tracy; Cozzolino, Roberto; Atzei, Andrea; Luchetti, Riccardo (2013). "Current Role of Open Reconstruction of the Scapholunate Ligament ". Journal of Wrist Surgery 02 (02): 116–125. doi:. ISSN 2163-3916.
