title: Incidence of osteolysis in total knee arthroplasty: comparison between radiographic and retrieval analysis.
abstract: Detection of polyethylene wear and osteolysis in total knee arthroplasty using radiographs is imprecise. To correlate radiographic findings with retrieved tibial component analysis, we reviewed knee revision cases. A joint registry was used to identify all knee revisions. Radiographic scoring systems were developed. Radiographs were analyzed for osteolysis and implant alignment. Polyethylene liner retrievals were visually and optically graded for surface damage. Statistical analyses that included correlation analysis and Mann-Whitney U test were used. When osteolysis was found, radiographic scores and delamination score were significantly higher (P = .047 and P = .014, respectively). Delamination is a good indicator for polyethylene wear and osteolysis. There is a need to develop in vivo methods to identify polyethylene changes and thereby prevent severe clinical outcomes.
authors.affiliation: Massachusetts General Hospital, Boston, Massachusetts, USA.
authors.forename: Dov
authors.initials: D
authors.lastname: Goldvasser
authors.forename: Anthony
authors.initials: A
authors.lastname: Marchie
authors.forename: Louisa K
authors.initials: LK
authors.lastname: Bragdon
authors.forename: Charles R
authors.initials: CR
authors.lastname: Bragdon
authors.forename: Lars
authors.initials: L
authors.lastname: Weidenhielm
authors.forename: Henrik
authors.initials: H
authors.lastname: Malchau
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D001672:Biocompatible Materials; D020878:Device Removal; D005260:Female; D006801:Humans; D015994:Incidence; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery*; D020959:Polyethylene; D011475:Prosthesis Failure; D011859:Radiography; D012042:Registries; D012086:Reoperation
chemical_list: D001672:Biocompatible Materials; D020959:Polyethylene