CONCEPT

Acetabular bone defects can be quite complex to manage because usual fixation sites are missing/severely damaged, but the iliac isthmus often remains supportive. For this reason, acetabular cups with Iliac Fixation were developed.

The Iliac Screw Mpact 3D Metal strives to become the definitive solution for the iliac screw fixation philosophy, providing for:

  • MODULAR DESIGN: difficult revisions and complex primary cases demand a personalized solution, to be specifically tailored on the individual patient, often intraoperatively. This requires the maximum flexibility on the implant side: a modular design and a wide size range help achieving this goal.
  • UNIQUE 3D SURFACE: the 3D Metal technology has allowed for a specific design of the outer surface, so that the friction and scratch-fit deliver an enhanced stability and the finely engineered porous structures promote an efficient structural and functional connection with the bone.
  • VERSATILE INSTRUMENTATION: an evolved instrumentation conducive for all surgical approaches, including the anterior approach, thanks to the specific instruments developed.
TECHNICAL DATA

ILIAC SCREW MPACT 3D METAL

*Compatible with HIGHCROSS UHMWPE liners only

 

COMPATIBILITY

Highcross UHMWPE Liners

Clipping system + anti-rotation tabs

The Clipping system for the polyethylene liners is placed outside the equatorial weight-bearing area in the thickest region of the liner.
This design reduces stresses at the liner/shell interface and minimizes the risk of the liner rim fracture in case of impingement.[1]

Therefore, the match between the anti-rotation tabs in the liner and the indentations on the shell limits rotational micro-movements and potential backside wear.[2,3]

Ceramic Liners

18° taper locking system

18° taper angle has been demonstrated to have a lower malseating rate if compared to different ceramic taper angle versions.[3,4] This tapered surface has been successfully adopted for all Medacta cups since 2005.[2]

SensiTiN DM Converter

18° taper locking system + micro-threads

The SensiTiN DM Converter tapered surface shows the same geometrical characteristics as the clinically successful Medacta ceramic liner. Micro-threads are also present on the tapered surface to increase stability of the device.

 

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