The Articular Surface Replacement (ASR) hip resurfacing from DePuy was introduced in July 2003, at around the same time as a number of other hip resurfacing devices. It was marketed as having the advantages of a reduced diametrical clearance (said to reduce wear) and a sub-hemispherical cup...

This is a “fourth” generation ankle design, which is a modification of the Agility ® ankle replacement and includes a redesigned winged talar component, the ability to upsize the talar component one size compared with the tibial component and front-loading polyethylene. The...

The DeltaMotion bearing from Finsbury is a large ceramic-on-ceramic bearing system. Femoral head diameters range from 32 to 48mm, shell sizes from 42 to 66mm. This system is said to be suited to patients with smaller acetabulae who would benefit from a large diameter bearing. The ceramic...

The Corail stem has been in clinical use since the 1980s. It is a fully hydroxy-apatite coated (150 micron thickness) non-porous forged titanium alloy stem. The design includes a proximal trapexoidal cross section, intended to resist axial/torsional stresses and promote initial stability, and a...

The Pinnacle Acetabular Cup System from Depuy comprises a 180 degree titanium shell with coating options including Porocoat (titanium sintered beads) Duofix (Porocoat with an HA coating) and Gription (high friction porous surface). The shell is designed to accept polyethylene, ceramic and metal...