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Opening wedge high tibial osteotomy: navigation system compared to the conventional technique in a controlled clinical study

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Abstract

Purpose

This study aimed to verify if the navigation system used in high tibial osteotomy (HTO) adds precision to the procedure regarding mechanical axis correction and prevention of tibial slope increases.

Methods

In this historically controlled study, patients with medial osteoarthrosis and genuvarum underwent HTO between 2004 and 2012; the first 20 were operated with the conventional technique, using pre-planning correction by the Dugdale method and 18 further patients were operated with the navigation system introduced in our hospital.

Results

The two groups were similar for pre-operative mechanical axis (mean 8.10 ± 3.14 for the control and 6.60 ± 2.50 for the navigated group), pre-operative tibial slope (mean 8.95 ± 3.47 versus 8.17 ± 3.11, respectively) and Lyshom score (40.85 ± 15.46 and 44.83 ± 16.86). After surgery, the control group presented mean mechanical axis of 3.35 ± 3.27, tibial slope of 13.75 ± 3.75 and Lyshom score of 87.60 ± 11.12. The navigated group showed a postoperative mechanical axis mean of 3.06 ± 1.70, tibial slope of 10.11 ± 0.18 and Lyshom score of 91.94 ± 11.61.

Conclusions

The navigation system allowed a significantly better control of tibial slope. Patients operated with the navigation system had significantly better Lysholm scores.

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No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article.

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Correspondence to Cristiano Hossri Ribeiro.

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Ribeiro, C.H., Severino, N.R. & Moraes de Barros Fucs, P.M. Opening wedge high tibial osteotomy: navigation system compared to the conventional technique in a controlled clinical study. International Orthopaedics (SICOT) 38, 1627–1631 (2014). https://doi.org/10.1007/s00264-014-2341-y

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  • DOI: https://doi.org/10.1007/s00264-014-2341-y

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