Bristol researchers have conducted studies on the success rate for hip and knee replacements. They analyzed data registry records from Australia, Finland, Denmark, New Zealand, Norway, and Sweden, which hold more than 15 years’ worth of data.
The researchers analyzed 92 case series relating to total hip replacements. This involved the reports of 215,000 people whose cases were followed up for 15 years after undergoing total hip replacements, 73,000 who were followed up for 20 years and 51,000 who were followed up for 25 years. Of the total hip replacements, the study indicates that 89 percent of replacements were found to last 15 years, 70 percent lasted 20 years, and 58 percent lasted 25 years. The results were even more impressive when it comes to total knee replacements. The researchers analyzed 47 case series in this instance. Total knee replacements lasted 15 years in 299,000 cases, 20 years for more than 88,000 interventions and 25 years in the case of 76,000 procedures. As a result, the British study shows that total joint replacements can last up to 25 years.
The EU project APRICOT is also committed to ensure that implants last as long as possible. They are developing a new biocompatible implant. "This approach is disruptive in that it’s easy to insert the implant and avoid collateral damage. This makes it possible to preserve the joint tissue and maintain mechanical properties, promoting the ability to self-repair and regenerate", says Dr. Oliver Schwarz, researcher at the Fraunhofer Institute for Manufacturing Engineering and Automation (IPA).