Ceramic And Cobalt Prosthetic

While it may seem reasonable to suggest that these benefits translate to longer problem free use we can really only assume that at this stage.

Ceramic and cobalt prosthetic. We present a 71 year old male with grinding sensations in his right hip following ceramic on ceramic total hip arthroplasty tha. The case presented in the lancet involved a 55 year old man. After diagnosing a fractured ceramic liner the hip prosthesis was revised into a metal on polyethylene bearing. In most cases the femoral stem component is built from titanium titanium cobalt stainless steel cobalt chromium alloys or a titanium and cobalt mixed metal.

Cobalt toxicity can lead to devastating effects but if it is caught early enough and revision surgery is performed to remove the metal prosthetic damage can be reversible. Have recommended ceramic on ceramic bearings should be preferentially used at revision of fractured ceramic component 37 they only recommend revision to a mop if a. Today cobalt chromium alloy is the most widely used prosthetic material in the femoral components of total knee prostheses showing good recovery of joint function post operatively. The head liner and acetabular parts can be made of either metal plastic or ceramic or a combination of the above.

It is recommended to use a new ceramic on ceramic bearing at revision in order to minimise the risk of wear related cobalt toxicity following breakage of ceramic components. Devitt bm queally jm vioreanu m et al. Ceramic devices by contrast appear to cause far less inflammation and few if any pseudotumors. This case illustrates the potential for systemic cobalt toxicity in non metal on metal bearings and its potentially devastating consequences.

This appears true whether the device is all ceramic ceramic and metal or ceramic and plastic. Advantages and concerns of ceramic components. Long term follow up has demonstrated excellent survival of the conventional cobalt chromium prosthesis 2 4 5. The degree of artefact is significantly less with ceramic implants in comparison to a cobalt chrome prosthesis 7 10 table 13 3.

Three different case studies of cobalt toxicity after hip replacement surgery were presented within 10 days of each other in early 2014. Cobalt ions induce chemokine secretion in a variety of systemic cell lines. In addition some have suggested ceramic components should replace failed ceramic prosthesis rather than using cobalt containing metal components. 37 38 trebse et al.

The artefacts from the prosthesis can be decreased by several methods. After removal of the prosthesis the levels of chromium and cobalt in blood and urine returned to normal with the patient currently being asymptomatic.