The STEMSYS solution

Primary or revision, cemented or cementless, standard


The design rationale of the STEMSYS implant is based on the self-blocking concept.

The cementless versions are made of titanium alloy and coated with either single hydroxyapatite layer or dual coating of porous titanium and hydroxyapatite.

The cemented versions are made of high nitrogen content stainless steel and are fully polished.

The cementless self-blocking concept has been validated by over 25 years of clinical use. The main characteristics are an immediate primary stability and a long term biological secondary fixation.

STEMSYS is designed and manufactured in France, and includes the complete EVOLUTIS know-how in the industrial fileds of conception and manufacture of cementless femoral implants: more than 30.000 stems implanted since 2001 in France, Europe et in the world, with outstanding clinical results.




  • micro-grooved 12/14 taper
  • cylindrical fully polished and reduced diameter neck
  • NSA (neck-shaft angle) available in standard (135°)
  • single neck length (except sizes 7 to 9: -3.5mm)
  • choice of collarless versions
  • unique metaphyseal macrostructure oriented along the dynamic load axis
  • choice of 4 surface finish (with and without cement)
  • choice of 2 stem lengths in primary cementless stems: normal or -15mm (on average)
  • revision cementless stems available either with distal slots or distal tranverse locking
  • long and extra-long option (up to 320mm) in distal tranverse locking revision


Used with Corresponding Femoral Heads 12/14 Taper

Available in Cr-Co Metal or Composit Alumine (Ceramic) material

Sizes: 22.2mm and 28mm

Lengths available: Short, Medium Long



Stemsys Catalogue

Femoral Head catalogue

Stemsys Cemented CE Cert

Stemsys Cementless CE Cert

Femoral Head CE Cert

JIS Stemsys & Femoral heads Medical Device Certificate No. 035545

JIS Instruments Cert