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DOI: 10.1055/s-0038-1660813
Conventional versus Smart Wireless Navigation in Total Knee Replacement: Similar Outcomes in a Randomized Prospective Study
Publikationsverlauf
06. November 2017
07. Mai 2018
Publikationsdatum:
20. Juni 2018 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00033766/201802/lookinside/thumbnails/10-1055-s-0038-1660813_1700041-1.jpg)
Abstract
Purpose The development of new computer-assisted navigation technologies in total knee arthroplasty (TKA) has attracted great interest; however, the debate remains open as to the real reliability of these systems. We compared conventional TKA with last generation computer-navigated TKA to find out if navigation can reach better radiographic and clinical outcomes.
Methods Twenty patients with tricompartmental knee osteoarthritis were prospectively selected for conventional TKA (n = 10) or last generation computer-navigated TKA (n = 10). Data regarding age, gender, operated side, and previous surgery were collected. All 20 patients received the same cemented posterior-stabilized TKA. The same surgical instrumentation, including alignment and cutting guides, was used for both the techniques. A single radiologist assessed mechanical alignment and tibial slope before and after surgery. A single orthopaedic surgeon performed clinical evaluation at 1 year after the surgery. Wilcoxon's test was used to compare the outcomes of the two groups. Statistical significance was set at p < 0.05.
Results No significant differences in mechanical axis or tibial slope was found between the two groups. The clinical outcome was equally good with both techniques. At a mean follow-up of 15.5 months (range, 13–25 months), all patients from both groups were generally satisfied with a full return to daily activities and without a significance difference between them.
Conclusion Our data showed that clinical and radiological outcomes of TKA were not improved by the use of computer-assisted instruments, and that the elevated costs of the system are not warranted.
Level of Evidence This is a Level II, randomized clinical trial.
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