Depuy Synthes DELTA XTEND™

Abstract

The Delta XTEND design is an improvement of the original Delta CTA design. All the principals of Professor Grammont, which are proven to be clinical effective by many medical centers with a follow-up of more than 15 years, are included. The DELTA XTEND has been designed to improve the range of motion and to reduce the scapular notching by creating an inferior glenosphere overlap, with the center of rotation still located at the glenoid plane, thereby eliminating any rocking horse effects. Additionally, despite the fact that the metaglene is substantially smaller, the stability has been improved by adding a curved back glenoid with variable angle, locking, and compression screws. The introduction of a two-piece stem design allows for version adjustment and an offset epiphyseal component so that more anterior cortical bone can be preserved. The polyethylene cups are offered in multiple thicknesses with a standard, high mobility, or retentive option allowing the surgeon to achieve the optimal joint stability for each patient. It is also possible to mix the any size humeral cup diameter with any size glenosphere. At last but not at least the surgical technique to implant this reverse prosthesis is simple and made more easier because of the smaller (2/3 of a circle) reamers and the reduced volume of the glenosphere (less than have a sphere).