Problems that surgeons encounter after insertion of a stemmed device include proximal bone loss from stress shielding
, postoperative periprosthetic fractures, osteolysis from polyethylene debris, and prosthetic loosening.
They concluded that using FGM in the design of cementless hip stem solves the problem of stress shielding
as well as decreases the interface shear stress between the implant and femur.
An uncemented, porous-coated stem enables bone ingrowth, but stress shielding
(leading to proximal bone loss) can be a long-term problem .
Leveraging the unique properties of this exciting material, Zimmer designed the TM Ardis Implant with a large porous surface area available for boney in-growth which supports biologic fixation and more even load distribution which has the potential to decrease the risk of stress shielding
Leveraging the unique properties of this exciting material, Zimmer designed the TM Ardis implant with a large surface area available for biologic fixation which means that the Trabecular Metal Material of the implant can more evenly distribute the load and decrease the risk of stress shielding
is defined as a reduction of local bone density over time as a result of a stress reduction in the bone, which can be caused by implants which are stiffer than the bone that the device is replacing.
Our composite foam can be a perfect match as an implant to prevent stress shielding
The stress shielding
is a mechanism that protects the skeleton from the natural stresses that the everyday life puts on it.
Significantly for orthopedic applications, the flexural stiffness of CFR PEEK-Optima is more like that of human bone than other biomaterials, thus creating implants that allow for better load sharing, reducing the impact of stress shielding
, says Invibio.
Why would you take a knee that [has only been studied] in the elderly, has no better motion, no better patello-femoral mechanics, has the unique complication of dislocation and instability, and now appears to have some wear and osteolysis problems and stress shielding
In addition, the elastic modulus, a physical property of the material, more closely matches that of cortical bone for load sharing with the potential to minimize stress shielding
and enhance fusion results.
It might potentially be more optimal in minimizing the bone stress shielding