title: Short-Term Metal Ion Trends Following Removal of Recalled Modular Neck Femoral Stems.
abstract: Elevated serum metal ions have been well documented with the Rejuvenate modular neck femoral stem (Stryker, Mahwah, NJ); however, the rate at which ion levels decline following revision is less clear. This study included fifty-nine consecutive revisions of Rejuvenate stems for symptomatic ALTR. Blood tests prior to revision and postoperatively at 6weeks, 3months, 6months, and 1year measured serum cobalt and chromium concentrations, ESR, and CRP. At six weeks following revision of a unilateral Rejuvenate, cobalt and chromium levels dropped from preoperative levels by 67% and 42%, respectively. At three months, cobalt levels declined to 19% of preoperative values, but chromium levels remained stable. With this information, surgeons can set realistic expectations for serum metal ion levels following Rejuvenate stem revision.
authors.affiliation: Division of Adult Reconstruction and Joint Replacement Surgery, Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medical College of Cornell University, New York, New York.
authors.forename: Brian T
authors.initials: BT
authors.lastname: Barlow
authors.affiliation: Division of Adult Reconstruction and Joint Replacement Surgery, Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medical College of Cornell University, New York, New York.
authors.forename: Joseph
authors.initials: J
authors.lastname: Assini
authors.affiliation: Division of Adult Reconstruction and Joint Replacement Surgery, Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medical College of Cornell University, New York, New York.
authors.forename: John
authors.initials: J
authors.lastname: Boles
authors.affiliation: Epidemiology and Biostatistics Core, Hospital for Special Surgery, New York, New York.
authors.forename: Yuo-Yu
authors.initials: YY
authors.lastname: Lee
authors.affiliation: Division of Adult Reconstruction and Joint Replacement Surgery, Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medical College of Cornell University, New York, New York.
authors.forename: Geoffrey H
authors.initials: GH
authors.lastname: Westrich
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D002857:Chromium / Q000097:blood*; D003035:Cobalt / Q000097:blood*; D003343:Corrosion; D005260:Female; D005272:Femur Neck; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D007477:Ions; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation
chemical_list: D007477:Ions; D002857:Chromium; D003035:Cobalt
keywords: Rejuvenate stem failure; dual taper; metal ion; modular neck; taper corrosion