Mpact 3D Metal Cup PMS

Cementless fixation, with or without screw augmentation, has evolved during the past few decades as the preferred method for acetabular reconstruction. Although major improvements have been recorded with regard to clinical outcomes and survivorship, acetabular component loosening remains among the most common causes of failure and revision. Patient age, poor bone quality and conditions, such as osteonecrosis and dysplasia, have been observed to influence negatively long-term clinical results. Initial stability is fundamental for survivorship of cementless cups. Prerequisites to achieve durable cementless cup fixation are close contact with viable native bone, primary mechanical stability and secondary bone integration. Press-fit techniques provide optimal conditions for bone ingrowth and fixation but research focused on cup material in order to improve primary stability. Pore size, bone-implant apposition, and material properties all influence bone ingrowth and long-term stability. Biological ingrowth surfaces have become a standard prosthetic element in reconstructive hip surgery. A material's properties, three-dimensional architecture, and surface texture all play integral parts in its biological performance. Trabecular metal is an important new biomaterial that has been introduced to enhance the potential of biological ingrowth as well as provide a structural scaffold in cases of severe bone deficit. The continuity between the porous and solid parts has been specifically…

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Luigi Zagra, Dr  ·  00390266214834  ·  luigi.zagra@fastwebnet.it

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