Zimmer Trabecular Metal Acetabular Augment and Restrictor | Used in Hip resurfacing | Which Medical Device

Trabecular Metal Acetabular Augment and Restrictor

Added Mar 25, 2013

Manufactured by Zimmer

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Categorised under: Orthopaedics > Hip > Acetabular components - cemented
Orthopaedics > Hip > Acetabular components - uncemented
Orthopaedics > Hip > Revision systems

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Description

From Which Medical Device

The Trabecular Metal Augment and Restrictors from Zimmer are a selection of structural augments intended for revision or difficult primary hip reconstructions associated with significant bone loss.  This is part of the Zimmer TMARS (Trabecular Metal Acetabular Revision System).
 
As with other Trabecular Metal components, high frictional resistance, low stiffness and a porous structure contribute to primary stability and integration into bone.  These implants come in a variety of sizes to match most defects. Bone graft can be placed inside the augment, and once in place, a socket can be cemented into the newly reconstructed socket.
In a series of 24 patients from Borland et al (1), there was a low failure rate at 5 years, with one of 24 patients requiring revision. 
 
References 
(1) Borland WS, Bhattacharya R, Holland JP, Brewster NT. Use of porous trabecular metal augments with impaction bone grafting in management of acetabular bone loss. Acta Orthop. 2012 Aug;83(4):347-52. Link to free text article is here.
 
2) Siegmeth A, Duncan CP, Masri BA, Kim WY, Garbuz DS. Modular tantalum augments for acetabular defects in revision hip arthroplasty. Clin Orthop Relat Res. 2009 Jan;467(1):199-205. Link to free text article is here.

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