“Mini” Hip Replacement
Implantation, where appropriate, of a replacement hip with a short stem enables your surgeon to preserve more of the thighbone, with less disruption of the muscles, ligaments, and other soft tissue surrounding the joint.
There is evidence that the implant’s design may result in a more natural distribution of weight on the joint, which also assists in bone preservation.
The more compact design also facilitates use by the surgeon of less invasive approaches that do not require as large an incision. Blood loss is minimized, as is the time needed for rehabilitation and recovery.
Infection is a rare but serious potential complication of any joint replacement procedure.
In North Texas, Medical City Plano’s surgeons are the leaders in treating infected joints. Currently, they are conducting research on the use of bone cement to deliver antibiotics that aid in eradicating infection. The antibiotic-laden cement can be fashioned into devices that help maintain joint space and soft tissue tension following removal of an infected prosthesis, in preparation for later reconstruction.
Medical City Plano’s surgeons are also currently engaged in research on the use of stem cells in the repair of bone defects caused by trauma, infections, and tumor surgery.
Stem cells have the remarkable ability to develop, as they divide, into other kinds of cells that have more specialized functions.
They help activate the body’s own healing system, stimulating the growth of tiny blood vessels found within bone that is just beginning to develop. In this way, the bone actually repairs itself with the help of the stem cells.
Wear-Resistant Knee Replacements
Where appropriate, the surgeons at Medical City Plano have been proactive in offering knee replacements that incorporate revolutionary new materials such as Oxinium™ (oxidized zirconium) and E-Poly (polyethylene infused with vitamin E).
Sharply reduced rates of wear have been observed with Oxinium™, a patented alloy which in orthopedic applications has displayed a hardness, smoothness, and resistance to scratching and abrasion far surpassing that of the conventional cobalt chrome.
E-Poly has shown great promise as a substitute for conventional polyethylene, a type of plastic which for more than four decades has been used as a bearing surface in replacement joints.
As polyethylene wears, tiny particles are created that can trigger the destruction of nearby bone. In addition, polyethylene itself is subject to oxidation in the presence of free radicals, which accelerates the wear of implant components containing it.
Infusion into the plastic of vitamin E, a naturally occurring antioxidant, helps to stabilize free radicals and extend the life of the implant.