The Silent hip is a tapered press-fit, textured implant designed to sit in the femoral neck without contacting the lateral cortex. It was launched in 2009 and remains in clinical trials. Links to clinical trials Multi-Centre Study to Assess the Long-Term Safety and Efficacy of the Silent...

The SMF Short Modular Femoral Hip System from Smith and Nephew is an uncemented titanium stem, approximately 20% shorter than conventional stems. It has a proprietary high-friction porous (mean pore size 200 microns) coating known as Stiktite ™ and has a cobalt-chrome modular neck design....

The Symbios hip system is a cementless, HA coated, Swiss manufactured hip system which comes in proximally coated, fully coated, modular and monoblock varieties. The stem is titanium and is either anatomic (the SPS) or straight stem (the Harmony). The system is marketed with preoperative...

The TaperLoc Microplasty from Biomet is a short femoral stem which is essentially a shortened version of the Taperloc stem (35mm shorter). This is a collarless, flat tapered wedge design, made from porous, plasma sprayed titanium. Lombardi et al give some useful advice for insertion. They...

The Tritanium Acetabular Cup from Stryker is an acetabular shell manufactured from Tritanium which is a proprietary commercially pure Titanium matrix.  Stryker report the shell has 72% porosity, a coefficient of friction of 1.01 and an average pore size of 546 microns. Clinical trials...