OPEN WEDGE HIGH TIBIAL OSTEOTOMY WITH COMPUTER AIDED NAVIGATION

Abstract

Aim: Aim of this prospectiv study is to present the first results of the grafted open-wedge high tibial osteotomy performed with aid of the computer-guided kinematic navigation and with use of the stable internal LCP-fixation. An arthroscopy preceded every operation.

Method: 20 cases were operated on in the year 2002 and 2003 by means of this method. The outcomes were evaluated minimally 2 years after the surgery clinically and radiologically.

Results: Before the osteotomy, the mean anatomic lateral tibiofemoral angle (aLTFA) was 181,1°. The desired 2° „overcorrection“ of valgus (aLTFA 172°) was found on X-rays postoperatively in all cases. The mean correction was 9,1°. The achieved correction wasn’t lost during 2 years of the follow-up. The osteotomy healed in all cases up to 4 months. The full range of motion remained after the surgery in all cases. All patients were satisfied with their results.

Conclusion: The computer-assisted open-wedge high tibial osteotomy with tricortical grafts stabilized by means of LCP-fixation gives exact and reproductable results without correction lost.