Affinis Short: The number one shoulder replacement
The Affinis Short is a shoulder endoprosthesis which can be implanted in only a few steps and whose bone-sparing design enables restoration of the glenohumeral geometry. The anatomical ceramic head, in combination with the Glenoid vitamys, minimises polyethylene wear compared to conventional bearings. 1, 2
The short stem has a bone window and a large-pored titanium structure with a calcium phosphate coating which promotes osseointegration and ensures good secondary stability. 3Simultaneously, the stem geometry allows a bone-sparing revision of the implant in the event of rotator cuff insufficiency or possible infection.
The head, made of inert ceramic, is highly biocompatible. Thanks to its range of sizes, a smooth transition between the implant and bone can be achieved.
With the Affinis Glenoid vitamys, highly cross-linked polyethylene (HXLPE) is introduced into the shoulder arthroplasty portfolio. Like the standard polyethylene design, the glenoid vitamys is equipped with two fixation pegs, for a high degree of stability.
BENEFIT
Nickel-free total shoulder prosthesis with ceramic head and Glenoid vitamys
Bone-sparing and less invasive thanks to the metaphyseal anchoring
Anatomical reconstruction of the glenohumeral geometry
Facilitated access to the glenoid via resection of the head, for accurate total joint replacement
Simple and intuitive instrumentation
1 Beck, M., et al., Oxidation Prevention with Vitamin E in a HXLPE Isoelastic Monoblock Pressfit Cup: Preliminary Results, in Total Hip Arthroplasty, K. Knahr, Editor. 2012, Springer Berlin Heidelberg. p. 21-31.
2 Data on file
3 Schwarz M.L.K., M.;Rose, S.;Becker, K.;Lenz, T.;Jani, L. Effect of surface roughness, porosity, and a resorbable calcium phosphate coating on osseointegration of titanium in a minipig model. J Biomed Mater Res A, 2009. 89(3): p. 667-78.