International Orthopaedics

, Volume 42, Issue 4, pp 799–804 | Cite as

Results with eight and a half years average follow-up on two hundred and eight e-Motion FP® knee prostheses, fitted using computer navigation for knee osteoarthritis in patients with over ten degrees genu varum

  • Dominique Saragaglia
  • Loic Sigwalt
  • Julia Gaillot
  • Vincent Morin
  • Brice Rubens-Duval
  • Régis Pailhé
Original Paper



The aim of this study was to analyse the clinical and radiographic results of 208 e-Motion® posterior cruciate-retaining, mobile bearing prostheses (BBraun-Aesculap, Tuttlingen, Germany) fitted using computer navigation, for knee osteoarthritis with a genu varum greater than 10°.


One hundred ninety-two patients were operated on with 208 e-Motion® prostheses fitted, between January 2006 and December 2011, using the OrthoPilot® computer navigation system. Average pre-operative IKS score was 70 ± 27 points (6-143) with a function score of 38 ± 20.5 (0-90) and a knee score of 32.5 ± 13 (0-63). Average flexion was 116.5° ± 13° (65-140°). Average pre-operative HKA angle was 166° ± 3° (154-169°).


2Results are available for 134 patients, with a total of 150 knees operated on (38 lost to follow-up and 20 deceased). Average follow-up was 104.5 months (60-116 months). On last follow-up, the average IKS was 180 ± 22 points (95-200) with 86.5 ± 16 points (25-100) for the function score and 93.5 ± 8 points (55-100) for the knee score. Knee flexion was 116° ± 10.5° (80-135°) and average HKA angle was 179° ± 2° (175-184°). The pre-operative objective was achieved in 90.5% of knees.


The e-Motion® mobile bearing posterior cruciate-retaining prosthesis, fitted using computer navigation, offers excellent results after an average of 8.5 years follow-up. These results are at least equivalent, even superior, to those of the posterior-stabilised prostheses usually used for this type of deformity.


Knee Osteoarthritis Severe genu varum Total knee arthroplasty Computer-assisted Navigation 



There is no funding source.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest related to this article. D. Saragaglia receives royalties from BBraun related to the e-Motion Knee Prosthesis. The other authors had, sometimes, financial support for attending orthopaedic meetings.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© SICOT aisbl 2017

Authors and Affiliations

  1. 1.Department of Orthopaedic Surgery and Sport TraumatologyGrenoble South Teaching HospitalÉchirollesFrance

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