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Low Incidence of Postoperative Complications With Navigated Total Knee Arthroplasty
Authors:Matthew J. Brown  John R. Matthews  Mary T. Bayers-Thering  Matthew J. Phillips  Kenneth A. Krackow
Affiliation:Department of Orthopaedic Surgery, University of Buffalo, Buffalo, New York
Abstract:

Background

A number of postoperative complications of navigated total knee arthroplasty (TKA) have been discussed in the literature, including tracker pin site infection and fracture. In this article, we discuss the low postoperative complication rate in a series of 3100 navigated TKAs and the overall complication rate in a systematic analysis of the literature.

Methods

Three thousand one hundred consecutive patients with navigated TKAs from 2001-2016 were retrospectively evaluated for complications specific to navigation. We discuss the 2 cases of postoperative fracture through tracker pin sites that we experienced and compare this systematically with the literature.

Results

Postoperatively, our 3100 patient cohort experienced a total of 2 fractures through pin sites for an incidence of 0.065%. One was a distal femoral fracture which was treated surgically, and the other was a proximal tibial fracture treated nonoperatively. Because of our incorporation of the tracker sites within our operative incision, there were no identifiable pin site infections, which others have noted at an incidence of 0.47%. Our 0.065% fracture rate compares favorably with the 0.16% rate of fracture published in the literature.

Conclusion

There is an extremely low risk of perioperative complications because of the instrumentation used in navigated TKA when using the Stryker Navigation System and 4.0 mm anchoring pins placed within the surgical incision.
Keywords:total knee arthroplasty  navigation  computer-assisted  arthroplasty  complications
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