The Proxima Short Stem from Depuy is a proximally loading short stem hip prosthesis made of forged titanium alloy, with a Duofix™ porous coating and hydroxyapatite surface coating. It is available in nine sizes with standard and high-offset variants. The paper by Toth (1) gives several...

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 Summit® Cementless Hip Replacement System from Depuy-Synthes is a tapered cementless titanium hip stem, whose features include a tapered neck geometry, a Porocoat porous or DuoFix HA coating, an anatomical medial curve, a grit blasted diaphyseal region and a polished distal tip to reduce...

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...