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General Orthopaedics

Follow-Up of a Custom Made Triflanged Cup for Severe Acetabular Defects

The International Society for Technology in Arthroplasty (ISTA)



Abstract

Treatment of Paprosky type 3A and 3B defects in revision surgery of a hip arthroplasty is challenging. In previous cases such acetabular defects were treated with massive structural allograft bone reconstructions using cemented all-polyethylene cups. In our department we started using custom made triflanged cups to restore the articulation of the hip.

The triflanged cups were designed on the basis of CT-image analysis. We are using a new type of implant construction technique with additive technology. This is a production process consisting of ion beam sintering joining metal powder particles layer upon layer on the basis of a 3D model data. The production technique is similar to rapid prototyping manufacturing.

7 Patients have been treated with this new technique. The case studies will be presented with their clinical and radiographic follow-up.

We think that additive technology is a breakthrough in treating this kind of severe acetabular defects.


∗Email: sascolen@hotmail.com