Strength

A CoCr modular neck provides for a strong neck construct. Fatigue testing has shown that the SMF Cobalt Chrome modular neck design exceeds the fatigue strength of the same neck design made out of titanium alloy by as much as 83% and a conventional titanium monolithic hip stem by as much as 18%.¹

Stability

Utilizing radiosterometric analysis (RSA), the SMF system demonstrated stability consistent with the clincially successful SYNERGY* primary hip stem. Moreover, HHS and WOMAC scores indicated excellent relative clinical outcomes for the SMF group.²

With one of the highest coefficients of friction in the industry³, a porosity of 60% and an average pore size which is ideal for boney ingrowth⁴, Stiktite* coating provides a solid foundation for both initial and long term fixation.

42 distinct head center

Each dot represents a head center that is achievable with the SMF system and the vast compliment of Smith & Nephew femoral heads. 

Conservation

The SMF system offers surgeons an improved bone sparing modular neck implant which is more than 20% shorter than other conventional hip stems.
Additionally, the SMF stem design allows for a higher neck resection which conserves more of the patient’s femur than conventional stems. Saving more bone
during a primary hip arthroplasty means a wider range of options for the future.

1.  Aldinger P, Tsai S, and Bergin A. CoCr and Ti-6Al-4V Modular Neck Fatigue
Testing, Poster no. 479 presented at the Society for Biomaterials 2009
Annual Meeting and Exposition, April 22-25, 2009, San Antonio, TX.