Related Experiment Video
Updated: Jul 16, 2026
Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
Published on: November 23, 2019
Imaging of four-corner fusion (SLAC arthrodesis) of the wrist with 64-slice computed tomography
L Ekelund1, L Hagberg, L Hörberg
1Department of Radiology, Malmö University Hospital, University of Lund, SE-205 02 Malmö, Sweden. leif.ekelund@skane.se
Purpose:
To find out whether it is possible to evaluate the healing of wrist arthrodesis, carried out with a metallic spider plate, by means of 64-slice computed tomography (CT).
Material And Methods:
18 CT examinations were performed in 12 patients 2 weeks to 37 months following scapholunate advanced collapse (SLAC) arthrodesis fixed with a metallic plate. Ten patients also had plain films of the wrist. Radiation doses were estimated.
Results:
Plain films were difficult to evaluate due to overprojection of the spider plate. With 64-slice CT, however, it was possible to evaluate the healing process in all patients in spite of metallic artifacts. Radiation doses were low.
Conclusion:
The healing of SLAC arthrodesis of the wrist is difficult to evaluate with conventional radiography due to the metallic plate. By means of 64-slice CT, however, it was possible to "see under" the plate in all 12 patients.
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