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Influence of computer navigation on TKA revision rates

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Abstract

Purpose

We performed this study to determine whether the use of imageless navigation reduces revision rates after total knee arthroplasty (TKA).

Methods

Data of 1,121 consecutive primary TKA with a follow-up of one to six years were retrospectively analysed. Following the conversion of the standard technique from conventional to navigated procedures, these data included the last 342 conventional and first 779 navigated procedures performed in our clinic. Demographic and perioperative covariates were recorded. All patients were asked by post to report instances of revisions.

Results

Data of 1,054 patients (94 %) were complete. Mean follow-up was 3.9 years for conventional and 2.4 years for navigated operations. Cumulative revision rate averaged 4.7 % for conventional and 2.3 % for navigated procedures. Cox’s proportional hazard model was used to assess the effect of covariates on survival, resulting in significantly lower revision rates for older patients (p < 0.001) and for the navigated technique (p = 0.012). The reduced revision rate for navigated operations was mainly caused by a significantly reduced rate of aseptic implant loosening (1.9 % vs. 0.1 %, p = 0.024).

Conclusions

Our study showed lower revision rates when computer navigation was used. However, due to the retrospective uncontrolled design, further prospective trials will be necessary to further evaluate this effect.

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Authors and Affiliations

  1. LVR Clinic of Orthopaedic Surgery, Horionstrasse 2, 41749, Viersen, Germany

    Christoph Schnurr, Isabell Güdden & Dietmar Pierre König

  2. Department of Orthopaedic Surgery and Traumatology, University of Cologne, Joseph-Stelzmann-Str.9, 50924, Cologne, Germany

    Peer Eysel

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  1. Christoph Schnurr
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  2. Isabell Güdden
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  3. Peer Eysel
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  4. Dietmar Pierre König
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Correspondence to Christoph Schnurr.

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Schnurr, C., Güdden, I., Eysel, P. et al. Influence of computer navigation on TKA revision rates. International Orthopaedics (SICOT) 36, 2255–2260 (2012). https://doi.org/10.1007/s00264-012-1606-6

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  • DOI: https://doi.org/10.1007/s00264-012-1606-6

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