Waled Abou Arab1, Aymeric Rauch2, Mohammad B Chawki3, Francois Dap4, Gilles Dautel4, Alain Blum5, Pedro Augusto Gondim Teixeira5. 1. Guilloz Imaging Department, Central Hospital, University Hospital Center of Nancy, 29 avenue du Maréchal de Lattre de Tassigny, 54035, Nancy cedex, France. waled.abouarab@gmail.com. 2. Guilloz Imaging Department, Central Hospital, University Hospital Center of Nancy, 29 avenue du Maréchal de Lattre de Tassigny, 54035, Nancy cedex, France. 3. Nuclear Medecine Department, Central Hospital, University Hospital Center of Nancy, 29 avenue du Maréchal de Lattre de Tassigny, 54035, Nancy cedex, France. 4. Centre Chirurgical Emile Gallé, Nancy, France. 5. Lorraine University, IADI laboratory, UMR S 947, rue du Morvan, 54511, Vandoeuvre-lès-Nancy, France.
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.
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.
Authors: Sanjeev Kakar; Ryan E Breighner; Shuai Leng; Cynthia H McCollough; Steven L Moran; Richard A Berger; Kristin D Zhao Journal: J Wrist Surg Date: 2016-01-18
Authors: Stephen S Henrichon; Brent H Foster; Calvin Shaw; Christopher O Bayne; Robert M Szabo; Abhijit J Chaudhari; Robert D Boutin Journal: Skeletal Radiol Date: 2019-07-09 Impact factor: 2.199
Authors: Luca Buzzatti; Benyameen Keelson; Jildert Apperloo; Thierry Scheerlinck; Jean-Pierre Baeyens; Gert Van Gompel; Jef Vandemeulebroucke; Michel de Maeseneer; Johan de Mey; Nico Buls; Erik Cattrysse Journal: Sci Rep Date: 2019-02-04 Impact factor: 4.379
Authors: Tobias Johannes Dietrich; Andoni Paul Toms; Luis Cerezal; Patrick Omoumi; Robert Downey Boutin; Jan Fritz; Rainer Schmitt; Maryam Shahabpour; Fabio Becce; Anne Cotten; Alain Blum; Marco Zanetti; Eva Llopis; Maciej Bień; Radhesh Krishna Lalam; P Diana Afonso; Vasco V Mascarenhas; Reto Sutter; James Teh; Grzegorz Pracoń; Milko C de Jonge; Jean-Luc Drapé; Marc Mespreuve; Alberto Bazzocchi; Guillaume Bierry; Danoob Dalili; Marc Garcia-Elias; Andrea Atzei; Gregory Ian Bain; Christophe L Mathoulin; Francisco Del Piñal; Luc Van Overstraeten; Robert M Szabo; Emmanuel J Camus; Riccardo Luchetti; Adrian Julian Chojnowski; Jörg G Grünert; Piotr Czarnecki; Fernando Corella; Ladislav Nagy; Michiro Yamamoto; Igor O Golubev; Jörg van Schoonhoven; Florian Goehtz; Maciej Klich; Iwona Sudoł-Szopińska Journal: Eur Radiol Date: 2021-06-08 Impact factor: 5.315