Abstract
Purpose
This article presents the results of a multiuser, randomized laboratory trial comparing the accuracy and precision of image-based navigation against individualized guides for distal radius osteotomy (DRO).
Methods
Six surgeons each performed four DROs using image-based navigation and four DROs using individualized guides in a laboratory setting with plastic phantom replicas of radii from patients who had received DRO as treatment for radial deformity. Time required and correction errors of ulnar variance, radial inclination, and volar tilt were measured.
Results
There were no statistically significant differences in the average correction errors. There was a statistically significant difference in the standard deviation of ulnar variance error (2.0 mm for navigation vs. 0.6 mm for guides). There was a statistically significant difference in the standard deviation of radial inclination error (\(6.1^{\circ }\) for navigation vs. \(1.4^{\circ }\) for guides). There were statistically significant differences in the times required (705 s for navigation vs. 214 s for guides) and their standard deviations (144 s for navigation vs. 98 s for guides).
Conclusions
Compared to navigated DRO, individualized guides were easier to use, faster, and produced more precise correction of ulnar variance and radial inclination. The combination of true three-dimensional planning, ease of use, and accurate and precise corrective guidance makes the individualized guide technique a promising approach for performing corrective osteotomy of the distal radius.
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Conflict of interest
Burton Ma, Manuela Kunz, Braden Gammon, Randy E. Ellis, and David R. Pichora declare that they have no conflict of interest.
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Ma, B., Kunz, M., Gammon, B. et al. A laboratory comparison of computer navigation and individualized guides for distal radius osteotomy. Int J CARS 9, 713–724 (2014). https://doi.org/10.1007/s11548-013-0966-8
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DOI: https://doi.org/10.1007/s11548-013-0966-8