Skip to main content
main-content

30.04.2018 | Computed Tomography | Ausgabe 10/2018

European Radiology 10/2018

Scapholunate instability: improved detection with semi-automated kinematic CT analysis during stress maneuvers

Zeitschrift:
European Radiology > Ausgabe 10/2018
Autoren:
Waled Abou Arab, Aymeric Rauch, Mohammad B. Chawki, Francois Dap, Gilles Dautel, Alain Blum, Pedro Augusto Gondim Teixeira

Abstract

Objectives

To evaluate the diagnostic performance of radioulnar deviation (RUD) and clenching fist (CF) maneuvers for the evaluation of scapholunate dissociation (SLD) using quantitative kinematic CT.

Methods

Thirty-seven patients with suspected scapholunate instability were prospectively evaluated with kinematic CT. Two radiologists independently evaluated the SLD during RUD and CF maneuvers. Various dynamic parameters describing SLD were compared (maximal value, variation coefficient and range) in patients with and without scapholunate ligament ruptures confirmed by CT arthrography.

Results

SLD in CF varied from 3.17 ± 0.38 to 3.24 ± 0.80 mm in controls and from 4.11 ± 0.77 and 4.01 ± 0.85 mm in patients with scapholunate ligament ruptures for reader 1 and 2 (p < 0.009). SLD in RUD varied from 3.35 ± 0.51 and 3.01 ± 0.78 mm in controls and from 4.51 ± 1.26 to 4.42 ± 1.75 mm in patients with scapholunate ligament ruptures for reader 1 and 2 (p varied from 0.001 to 0.002). The inter-observer variability was better for RUD (ICC = 0.85 versus 0.6 for RUD and CF respectively).

Conclusion

Analysis of SLD using kinematic CT has shown significant measurement differences between the groups with or without scapholunate instability with good diagnostic performance.

Key Points

• Kinematic CT can quantitatively assess scapholunate dissociation.
• SLD analysis on kinematic CT has excellent reproducibility with radioulnar deviation maneuver.
• Scapholunate dissociation was significantly different in patients with and without instability.
• Diagnostic performance for scapholunate instability identification was better with radioulnar deviation.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

★ PREMIUM-INHALT
e.Med Interdisziplinär

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de.

Jetzt e.Med zum Sonderpreis bestellen!

Sichern Sie sich jetzt Ihr e.Med-Abo und sparen Sie 50 %!

Weitere Produktempfehlungen anzeigen
Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 10/2018

European Radiology 10/2018 Zur Ausgabe
  1. Sie können e.Med Radiologie 14 Tage kostenlos testen (keine Print-Zeitschrift enthalten). Der Test läuft automatisch und formlos aus. Es kann nur einmal getestet werden.