Groundbreaking research at RUSH University Medical Center is helping scientists understand why artificial joints fail, leading to innovations in implant materials and design that could help hip and knee replacements last longer.
Joint replacement surgery has transformed the lives of millions of patients, relieving pain, restoring mobility, and allowing people to return to the activities they love. While advances in surgical techniques have made recovery easier for many patients, researchers are also working behind the scenes to improve the artificial joints themselves.
At RUSH University Medical Center in Chicago, a specialized implant retrieval laboratory is helping lead that effort. By studying artificial joints that have been donated for research, scientists are uncovering valuable information about how implants perform over time, why some fail, and how new materials and designs can improve their longevity.
Dr. Richard Berger, a pioneer in minimally invasive outpatient hip and knee replacement surgery, is a strong supporter of the laboratory and its mission to advance orthopedic care through research and innovation.
Studying Implants to Understand Why They Fail
RUSH is home to one of only a handful of implant retrieval laboratories in the country. The laboratory studies artificial joints that have been donated by patients following their passing, giving researchers a rare opportunity to examine how implants have performed inside the human body over many years.
By analyzing implants that have been in place for decades, scientists can identify patterns of wear, material degradation, and other factors that may contribute to implant failure.
The research goes beyond simply examining the artificial joint. RUSH brings together an interdisciplinary team of specialists in histology, biology, mechanical engineering, materials science, and orthopedic surgery to study the complex relationship between implants and the human body.
Researchers examine the tissues surrounding artificial joints to better understand how materials interact with the body over time. They also investigate whether microscopic particles released from implants can travel beyond the joint and potentially contribute to complications elsewhere in the body.
This comprehensive approach provides a deeper understanding of implant performance and helps identify opportunities for improvement.
Discoveries That Are Changing Implant Design
The research conducted at RUSH has contributed to important advancements in joint replacement technology.
Researchers at the laboratory were among the first to identify the consequences of corrosion in certain metal implant components and how that corrosion can contribute to premature hip replacement failure. Understanding these complications has helped inform improvements in implant materials and design.
Other advancements include the development of specialized coatings on implant surfaces that encourage bone to grow into the implant, creating a more secure connection between the artificial joint and surrounding bone.
Improvements in polyethylene, the durable plastic material commonly used in joint replacements, and newer ceramic materials are also helping address implant wear and longevity.
Together, these innovations have the potential to extend the lifespan of artificial joints and reduce the likelihood of complications that could require additional surgery.
Through systematic, rigorous research, the RUSH team continues to uncover information that helps orthopedic manufacturers refine existing technologies and develop better-performing implants.
The Role of Patients in Advancing Orthopedic Research
Behind many of these discoveries is the generosity of joint replacement patients who want to help improve care for future generations.
Some of Dr. Berger’s patients have arranged to donate their artificial joints to the laboratory following their passing. These donations allow researchers to examine implants that have functioned inside the body for years or even decades, providing insights that cannot always be replicated through laboratory testing alone.
Patients have also made generous financial contributions to support the laboratory’s research.
Much of the lab’s work has been made possible through donations from grateful patients who experienced successful joint replacements and wanted to help others benefit from continued advancements in orthopedic medicine.
Their contributions help sustain the research needed to improve implant materials, refine designs, and better understand the long-term performance of artificial joints.
Improving Joint Replacement for Future Generations
For Dr. Berger, supporting research at RUSH is a natural extension of his commitment to improving the joint replacement experience.
Throughout his career, he has helped pioneer minimally invasive outpatient hip and knee replacement techniques designed to minimize disruption to surrounding muscles, ligaments, and tendons, allowing patients to recover more quickly and return to their daily activities.
At the same time, advances in implant technology are helping address another critical aspect of joint replacement success: how well an artificial joint performs over the long term.
The discoveries being made at RUSH demonstrate how collaboration between researchers, surgeons, manufacturers, and patients can lead to meaningful improvements in orthopedic care.
As scientists continue studying implants and developing new technologies, their work offers the potential for longer-lasting joint replacements and better outcomes for generations of patients to come.