title: [Release of metals from metal-on-metal hip prostheses].
abstract: The present study examined blood and urinary concentrations of Cr and Co in 30 patients with metal-on-metal hip prostheses without signs of wear and 6 patients with prosthetic bearing and clear signs of wear and metallosis. The determination in biological fluids showed in patients with not signs of wear the geometric mean concentration of metals only modestly increased (CoS 0.5 microg/l, CoU 5.7 microg/l, CrS 0.8 microg/l, CrU 3.4 microg/l) compared to the reference values, while the wear caused a significant increase in the concentration of both Co (CoS 94.6 microg/l, CoU 334.5 microg/l) and Cr (CrS 57.7 microg/l, CrU 89.4 microg/I). As the results, the not functioning implants are a risks to the patients and are associated with high levels of metals in biological fluids. Currently, the patients with metallosis had not signs and symptoms associated with metal toxicity, but high concentrations could to cause kidney, peripheral nervous system, heart, and thyroid damage.
authors: Dipartimento di Medicina Ambientale e Sanità Pubblica, Università di Padova, Via Giustiniani 2, 35128 Padova, Italy.
authors: A
authors: A
authors: Nicolli
authors: F
authors: F
authors: Chiara
authors: I
authors: I
authors: Bortoletti
authors: F
authors: F
authors: Pasqualato
authors: M
authors: M
authors: Mongillo
authors: A
authors: A
authors: Gambalunga
authors: F
authors: F
authors: Biggi
authors: A
authors: A
authors: Trevisan
mesh_terms: D002857:Chromium / Q000097:blood* / Q000652:urine*; D003035:Cobalt / Q000097:blood* / Q000652:urine*; D005260:Female; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D061825:Metal-on-Metal Joint Prostheses / Q000009:adverse effects*; D008875:Middle Aged
chemical_list: D002857:Chromium; D003035:Cobalt