All metal implants release metal ions because of corrosion. Total knee arthroplasty implants have large metal surface areas and therefore substantial potential for corrosion. It is planned to compare changes in serum levels of metal ions in patients after implantation of cemented unconstrained total knee arthroplasty covered with or without a passivating surface. Serum concentrations of chromium, cobalt, molybdenum and nickel will be analyzed and compared between the two groups, as well as with those of 130 control patients without implants.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
120
Implantation of a coated Total Knee Arthroplasty
Implantation of a Standard Total Knee Arthroplasty
University Hospital Dresden, Orthopaedic Department
Dresden, Germany
Metal ion concentration in serum after TKA (Cr, Co, Mb, Ni)
Time frame: 1 y and 5y
Hypersensitivity against metal
Time frame: 1 y
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