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8 Νοε 2023 · Cobalt was widely used for hip and knee joint replacements until cases of heavy metal poisoning appeared. Now, researchers from the University of Connecticut School of Medicine and Carnegie Mellon report a way to protect people with these implants from cobalt toxicity.
2 Φεβ 2024 · In the specific subgroup in which patients are being considered for index primary joint replacement and metal allergy to cobalt or chromium is clinically-supported, current evidence suggests that a hypoallergenic implant coating may reduce immunogenic metal ion release and thus reduce the potential risk of sensitization and immune priming .
22 patients with total knee arthroplasty and metal-on-metal hinge connecting mechanisms were studied for whole-blood chromium and cobalt levels at 6 months, 1 year, and at 2 years or less after surgery. Possible adverse patient’s reactions to metal debris were investigated by MRI.
We report a case of metallosis following knee arthroplasty in which synovitis developed acutely after joint replacement, most likely as a result of deposition of metallic debris from oscillating bone saw blades.
It is conceivable that unexplained pain may be a consequence of metal hypersensitivity. Several metal alloys (cobalt, chromium, nickel, titanium) are used in TKA implants with the aim of providing long-term durability with optimal biocompatibility.
15 Ιουλ 2021 · The incidence of raised cobalt and chromium levels after total knee replacement (TKR) is relatively unknown but it does exist in the presence of loose knee implants and further research is required. A revision of TKR was required for the management of the case.
13 Απρ 2023 · Prosthetic joints containing metals nickel, chromium, and cobalt are most likely to cause a reaction. Hypoallergenic knee replacement materials are available. People with known metal allergies or sensitivities should tell their surgeon prior to knee replacement surgery.
