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Clinical Trial Summary

Patients are to be approached to attend clinic who have been identified as being implanted with either a Lima Corporate Delta Revision TT, Delta One TT or the Delta Multihole Systems hip systems between 2011 and 2013, a minimum of 10 years since hip surgery. They will be x-rayed (AP pelvis and a lateral view) and a blood test will be taken and sent to a lab in Surrey to check titanium levels.


Clinical Trial Description

Since its popularisation in the 1960's, Hip replacements have become one of the NHS's highest volume procedures. Unfortunately, hip replacements can fail with on average 8,500 revision hip replacements being performed each year pre-covid. Often this is very complex with destruction of the normal anatomy leaving surgeons with a significant challenge in ensuring appropriate positioning of the socket within the confines of the patient's anatomy. The Lima Corporate Delta Revision TT, Delta One TT and Delta Multihole Systems are designed to help surgeons with this very problem by providing the option of a 'face changer' allowing surgeons to place a socket within a socket. To allow for this function, the 'face changer' must connect with the acetabular cup (socket). Through research, it is widely known that when metals interact within the body, they can cause wear and shedding of metal debris. This process is known as metallosis and can result in metal ions being released into the surrounding bone and tissues as well as being absorbed into the blood stream. The risk of this is highest when there is significant movement between the components (such as in metal-on-metal hip replacements). It is less of an issue at other interfaces which are not intended to allow movement between them. That said, our hypothesis is that the increase in the number of interfaces which gives us the flexibility we need, may increase the release of free metal ions in the blood stream. The aim of this study is to therefore identify if this is in fact the case and if so, whether the increase in ions is sufficient for surgeons to bear in mind. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06033651
Study type Observational
Source Robert Jones and Agnes Hunt Orthopaedic and District NHS Trust
Contact Julie Steen
Phone +441691404418
Email julie.steen@nhs.net
Status Not yet recruiting
Phase
Start date May 30, 2024
Completion date May 30, 2025

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