Read Complete Article Here     January 14, 2019

Orthopedic Product News interview Derek McMinn and Ronan Treacy of the UK about the current state and future state of hip resurfacing and devices.

… Ronan Treacy:  so Catherine kindly demonstrated the results for the BHR. She looked at the results for patients <=50 years of age with a diagnosis of osteoarthritis, the number of BHR’s in her data set was 4,056 implants. When she looked at the male and female results in isolation, she reported 3,187 male patients with a Kaplan–Meier survivorship of 96.2 per cent to 20.1 years. In female patients the numbers were lower, at 869 implants who demonstrated an 86.8 per cent Kaplan–Meier survivorship at 19.5 years. We remain encouraged by the performance of our design…

…Derek McMinn:  As you will know, our friend and colleague ProfessorJustin Cobb’s well publicised Ceramic on Ceramic H1 Hip Resurfacing Study is under way. We are pleased to have another keen hip resurfacing addict attempting to keep the technique alive.

In our revision experience we have seen a number of cases of severe acetabular stress shielding behind the BHR cup at long- term follow up. Given that alumina ceramic is twice as stiff as cobalt chrome, we do not believe that ceramic cups are the way forward. We are much more attracted to the idea of titanium porous coated cross-linked polyethylene cups, which have a stiffness closer to bone…

…Derek McMinn:  We have just over three years of experience with the custom metal-on-crosslinked polyethylene resurfacing. Clinical and radiographic results are excellent and there have been no revisions.

Ronan Treacy: Being aware of the guidance provided by the MHRA on the use of custom-made orthopaedic implants, coupled with the high production costs of such components, led us to the conclusion that the only viable route for us would be one of developing our own commercial route to progress a highly crosslinked polyethylene hip resurfacing system, in much the same way we achieved with the BHR during the MMT era…

OPN: Where do you see the hip resurfacing market going?

…Derek McMinn:  As you will know, our friend and colleague Professo rJustin Cobb’s well publicised Ceramic on Ceramic H1 Hip Resurfacing Study is under way. We are pleased to have another keen hip resurfacing addict attempting to keep the technique alive…

OPN: Where does custom metal-on-crosslinked polyethylene resurfacing stand?

…Derek McMinn: We have just over three years of experience with the custom metal-on-crosslinked polyethylene resurfacing. Clinical and radiographic results are excellent and there have been no revisions…