LDR is now Zimmer Biomet

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Product Overview

The MC+® concept was developed for cervical degenerative pathologies to ensure the fusion of a cervical spine segment, using an anterior approach.

The MC+ cage can be used alone or combined with the exclusive patented self retaining cervical anchoring clip, to increase the primary stability of the implant, whenever necessary.

The cervical anchoring clip is placed into the lower vertebra through the anterior part of the cage, after implantation of the cage. Thus the surgeon has the choice of increasing the primary stabilization of the implant without having to over-distract the intersomatic space.

A made-to-measure anatomical bone substitute has been developed for each size of MC+ cage. These fit the contours of the implant perfectly, ensuring the optimal filling of the interbody space. The MC+ cage is radiolucent allowing visualization of bone growth through the implant.


Stability and anatomy

Respect of the anatomy

  • The anatomical shape of the MC+® implant (with its upper convex part in the frontal and saggital planes)makes it possible to restore the chosen discal height as well as the lordosis of the inter-body space involved, and it ensures excellent primary stability of the implant.
  • The large peripheral weight bearing surface of the implant increases primary stability and allows immediate loading, without the use of bracing.

Optimized grafting space

  • The MC+® cage offers a wide and unique grafting space plus the opportunity of using made-to-measure anatomical bone substitute or autologous bone for the fusion.

A concept aimed at stability

  • Due to its anatomical shape, the MC+® cage allows the close contact between the end-plate bone and the implant, thus enhancing load-bearing of the graft or bone substitute and facilitating the arthrodesis.
  • The upper and lower surfaces of the implant are retaining surfaces which limit risks of implant displacement.

Modularity and exclusive technical characteristics

Anchoring Clip

  • The patented design of the anchoring clip guarantees its self-retainement within the implant. The self-retaining design of the anchoring clip guarantees its stability within the implant
  • The placement of the cervical anchor does not require any over-distraction since it can be introduced after implantation cage is used only if primary stability cage appears insufficient, thus ensuring a unique modularity: first its type on market today.
  • The anchor is self-guided by means of the implant holder according to it’s angular orientation (50° in relation to the end-plate) and also in depth so as to ensure perfect positioning (stop-impactor).
  • The made-to-measure bone substitute adapts perfectly to every size and type of implant in order avoid harvesting from the illiac crest.

Radiolucency and safety

Radiolucency and consistency

  • The bio-compatibility and mechanical qualities of PEEK-OPTIMA® have now been largely recognized in inter-body applications.
  • This material has an elasticity close to that of bone so that there is no graft weight-bearing problem. There is consequently, a biomechanical consistency between two spine segments, the fusion of which can be assessed and controlled overtime due to the radiolucency of the cage.


  • The MC+® inter-body cages are implanted according to a reproducible operating technique. As soon as they are placed, the serrated profile of the implants ensures their self-retaining properties, until fusion takes place.

3D Animation

Surgical Technique