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Medial Rotation Principles High on the Agenda at The London Knee Meeting

Medial Rotation Principles High on the Agenda at The London Knee Meeting

Thursday, October 06, 2016

The London Knee Meeting brings together renowned national and international faculty each year to present an up-to-date view on topics of importance and areas of debate in knee surgery. The event is very well regarded and has a strong following with more than 400 delegates attending each year.

This year the event took place on the 4 October 2016 at the Queen Elizabeth II Centre in London. We were very pleased to see the event Chairman, Professor Fares Haddad from University College London Hospital, and others speaking positively and enthusiastically about the principles of medial rotation during their presentations.

The features of the MatOrtho® medial ball-and-socket knee devices continue to provide better ROM, high-end function and more ‘forgotten knees’ at 5 years follow-up. Studies into high-end activity and patellofemoral function for the SAIPH® are in progress.

In the afternoon session on total knee replacement, Professor Haddad presented results of his own department’s work: ‘Medially stabilised TKR designs. Biomechanical and clinical results’.

Noting that the work by Freeman, Pinskerova et al. is now widely accepted, and following the previous presentation by Michael Meneghini (IU Health, Indiana, US) that concluded the replication of natural knee kinematics in TKR surgery improves outcomes, Professor Haddad remarked that discussion of medial stability in TKR is timely. Of the medially stabilised knees already available, he identified the MRK™ as having the longest clinical history and along with the SAIPH® had evolved from the original Freeman series.

Professor Haddad showed results from studies by Shimmin et al. 2015 [1] and Molloy et al. 2013 [2] that had confirmed the inherent stability exhibited in this knee design throughout flexion and posed the question: “does this inherent stability have the potential for better function, better outcomes, and better satisfaction?”

The focus of his presentation was to update delegates on the latest results of a previously published study which compared the MRK™ with the PFC [3] at 2 years follow up. The updated data showed that, in comparison with the PFC, greater improvement in ROM, improved function, including the high-end activity (total knee function questionnaire (TKFQ)) and a greater proportion of patients expressing their TKR as a ‘forgotten knee’ (during routine activities) were all maintained at five years post-op.

Professor Haddad concluded that better function, better outcomes and better satisfaction can be attributed to this design. He also stated that his at UCH, London are continuing to study high-end activities and patellofemoral function for the SAIPH® Knee.

After the presentations and during the panel discussion, it was mentioned that the additional stability and better feeling of normality is likely to be differentiated by patients when taking on activities like fast walking, and walking up and down hills.

The panel also discussed how, in cases where the PS design may have routinely been chosen for its perceived stability, the medial stabilised design can be considered a safe and beneficial option to use in place of posterior stabilised designs.  

Overall the event was a huge success for MatOrtho® and further testament that the wider audience and leading surgeons are understanding, embracing and buying into our Medial Ball-and-Socket philosophy!

  1. Shimmin A, Martinez Martos S, Owens J, Iorgulescu AD, Banks S. Fluoroscopic motion study confirming the stability of a medial pivot design total knee arthroplasty. The Knee. 2015; 22(6): 522-526.
  2. Molloy D, Jenabzadeh R, Walter W and Hasted T. Sagittal Stability in Three Different Knee Designs. A Single Centre Independent Review. Bone Joint J 2013; 95-B SUPP 15 85.
  3. Hossain F, Patel S, Rhee SJ, Haddad FS. Knee arthroplasty with a medially conforming ball-and-socket tibiofemoral articulation provides better function. Clin Orthop Relat Res. 2011; 469(1):55-63.



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