Surgical accuracy in high tibial osteotomy: coronal equivalence of computer navigation and gap measurement

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Bibliografske podrobnosti
izdano v:Knee Surgery, Sports Traumatology, Arthroscopy vol. 24, no. 11 (Nov 2016), p. 3410
Glavni avtor: Schröter, S
Drugi avtorji: Ihle, C, Elson, D W, Döbele, S, Stöckle, U, Ateschrang, A
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John Wiley & Sons, Inc.
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Online dostop:Citation/Abstract
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024 7 |a 10.1007/s00167-016-3983-7  |2 doi 
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045 2 |b d20161101  |b d20161130 
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100 1 |a Schröter, S 
245 1 |a Surgical accuracy in high tibial osteotomy: coronal equivalence of computer navigation and gap measurement 
260 |b John Wiley & Sons, Inc.  |c Nov 2016 
513 |a Journal Article 
520 3 |a Purpose Medial opening wedge high tibial osteotomy (MOW HTO) is now a successful operation with a range of indications, requiring an individualised approach to the choice of intended correction. This manuscript introduces the concept of surgical accuracy as the absolute deviation of the achieved correction from the intended correction, where small values represent greater accuracy. Surgical accuracy is compared in a randomised controlled trial (RCT) between gap measurement and computer navigation groups. Methods This was a prospective RCT conducted over 3 years of 120 consecutive patients with varus malalignment and medial compartment osteoarthritis, who underwent MOW HTO. All procedures were planned with digital software. Patients were randomly assigned into gap measurement or computer navigation groups. Coronal plane alignment was judged using the mechanical tibiofemoral angle (mTFA), before and after surgery. Absolute (positive) values were calculated for surgical accuracy in each individual case. Results There was no significant difference in the mean intended correction between groups. The achieved mTFA revealed a small under-correction in both groups. This was attributed to a failure to account for saw blade thickness (gap measurement) and over-compensation for weight bearing (computer navigation). Surgical accuracy was 1.7°&#xa0;±&#xa0;1.2° (gap measurement) compared to 2.1°&#xa0;±&#xa0;1.4° (computer navigation) without statistical significance. The difference in tibial slope increases of 2.7°&#xa0;±&#xa0;3.9° (gap measurement) and 2.1°&#xa0;±&#xa0;3.9° (computer navigation) had statistical significance (P < 0.001) but magnitude (0.6°) without clinical relevance. Conclusion Surgical accuracy as described here is a new way to judge achieved alignment following knee osteotomy for individual cases. This work is clinically relevant because coronal surgical accuracy was not superior in either group. Therefore, the increased expense and surgical time associated with navigated MOW HTO is not supported, because meticulously conducted gap measurement yields equivalent surgical accuracy. Level of evidence I. 
651 4 |a Germany 
653 |a Osteoarthritis 
653 |a Patients 
653 |a Software 
653 |a Accuracy 
653 |a Joint surgery 
653 |a Arthritis 
653 |a Knee 
700 1 |a Ihle, C 
700 1 |a Elson, D W 
700 1 |a Döbele, S 
700 1 |a Stöckle, U 
700 1 |a Ateschrang, A 
773 0 |t Knee Surgery, Sports Traumatology, Arthroscopy  |g vol. 24, no. 11 (Nov 2016), p. 3410 
786 0 |d ProQuest  |t Health & Medical Collection 
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856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/1833024768/fulltextPDF/embedded/6A8EOT78XXH2IG52?source=fedsrch