Navigated revision TKR: a comparative study with conventional instruments
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Jean-Yves Jenny1, Yann Diesinger
1Hôpitaux Universitaires de Strasbourg, Centre de Chirurgie Orthopédique et de la Main, 10 Avenue Baumann, F-67400 Illkirch, France.
Abstract:
We selected 86 cases for the study: 50 navigated revision total knee replacements (TKRs) and 36 conventional revision TKRs. We hypothesized that the rate of satisfactory implantation would be higher for navigated revision TKR than for conventional revision TKR. The primary criterion was the rate of optimally implanted prostheses on postoperative anteroposterior and lateral long leg radiographs. Thirty-one navigated cases (62%) and 14 conventional cases (39%) had an optimal global implantation (P<.05). The use of a standard navigation software for revision TKR allows a significant improvement of the accuracy of implantation. However, development of dedicated software will allow addressing more precisely the specific features of a revision TKR, such as stem extension navigation, defects filling, and joint line reconstruction.
