MyKnee®: Patient-Matched Instruments

  • Stefan Dittrich
  • Werner Anderl


Proper alignment of the components aimed at accurately reconstructing the mechanical leg axis has gained crucial importance in total knee replacements. Any deviation from the mechanical leg axis by more than 3° varus or valgus will have a negative impact on the outcome (Fang et al. 2009). Computer-assisted surgery (CAS) has markedly improved the accuracy of both component placement and reconstruction of the mechanical leg axis (Fu et al. 2012). Nevertheless, compromises such as extended surgery time and enhanced complication rate, in particular owing to the requirement that additional pins need to be placed, have had to be accepted. These disadvantages of CAS have been eliminated thanks to the development of patient-matched cutting blocks and pin-positioning guides. MyKnee® by Medacta was one of the first systems of this type available on the international market (Koch2010).


Total Knee Arthroplasty Total Knee Replacement Access Route Cutting Block Resection Level 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Fang DM, Ritter MA, Davis KE (2009) Coronal alignment in total knee arthroplasty. Just how important is it? J Arthroplasty 24 [Suppl 1]:39–43PubMedCrossRefGoogle Scholar
  2. Fu Y, Wang M, Liu Y, Fu Q (2012) Alignment outcomes in navigated total knee arthroplasty: a meta-analysis. Knee Surg Sports Traumatol Arthrosc 20:1075–1082PubMedCrossRefGoogle Scholar
  3. Koch PP (2010) Patient matched instrumentation MyKnee â system: a new vision in total knee replacement. Maitrise Orthopedique 198Google Scholar
  4. Victor J, Van Doninck D, Labey L, Innocenti B, Parizel PM, Bellemans J (2009) How precise can bony landmarks be determined on a CT scan of the knee? Knee 16:358–365PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Stefan Dittrich
    • 1
  • Werner Anderl
    • 2
  1. 1.Department of Orthopedic SurgeryGelenk-Zentrum HietzingVienna
  2. 2.Barmherzige Schwestern HospitalVienna

Personalised recommendations