Ceramic On Metal Hip Resurfacing

Back in 2010 you ruled outpolyethylene as a suitable material for use in hip resurfacing you stated andi quote directly from the article here.

Ceramic on metal hip resurfacing.

A new type of implant may change that as it s made out of ceramic instead of the traditional metal. Derek mcminn is leading a highly experienced team championing mox bearing resurfacings. Ceramic hip implants are among the newer types of prostheses being used for hip replacement offering greater resistance to damage and smooth movement of the joint. Unlike traditional hip replacement hip resurfacing doesn t completely replace the ball of the hip with a metal or ceramic ball.

A sub type of a polyethylene hip is made with a newer plastic called cross linked polyethylene which is more durable. My colleague professor justin cobb at imperial college london is the leading proponent of ceramic on ceramic bearings for hip resurfacing and his design is currently in clinical investigation. Many surgeons today consider them to be an improvement over traditional metal and plastic implants in which the deterioration of plastic can lead to the gradual buildup of debris around the joint. Now at imperial we re running a trial of a ceramic hip implant the h1 to resurface patients hips without using metal.

The hip socket is fitted with a metal cup. The surgeon i am going to only does hips and has done a lot of metal on metal hip resurfacing he said it makes up 5 of his practice so i am fairly confident in his skill set. It includes a safety study followed by an efficacy study. Polyethylene had been tried but the volumetric wear associated with the necessarily large head for resurfacing resulted in the pseudo tumors of the day osteolysis and the five year survivorship.

We hope this means the advantages of hip resurfacing are kept while the. Instead the bone is reshaped and capped with a metal prosthesis. Among the advantages of ceramic hip replacements are their durability and that they don t release metal debris into the body which can occur with metallic artificial hips. Ceramic hip replacement systems made of durable ceramic oxides of metal offer both advantages and disadvantages over hip replacement systems made of metal or polyethylene.

As these metal surfaces rub together there is the potential for wear and release of metal ions. Ceramic on ceramic was a non starter the components were too thick for a conservative arthroplasty and brittleness and fracture was an issue. This is a prospective non randomized consecutive series multicentre observational study to evaluate the clinical outcome of ceramic on ceramic hip resurfacing arthroplasty using the ceramic non porous non cemented h1 hip resurfacing arthroplasty.