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...

The P.F.C. SIGMA Total Knee System is designed to provide the surgeon with surgical solutions for a variety of clinical indications. Based on the clinically successful P.F.C. Total Knee System introduced in 1984, P.F.C. SIGMA continues a history of innovation based on clinical proof. P.F.C....

The Low Contact Stress (LCS) knee system from DePuy is a rotating platform knee replacement system, first implanted in 1977.  The device has a polished cobalt-chrome tibial tray into which the peg of the polyethylene tibial component is placed to allow rotation. There are antero-posterior...

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...