title: Assessment of radiolucent lines in cemented shoulder hemi-arthroplasties: study of concordance and reproducibility.
abstract: We report on the concordance and reproducibility of the evaluation of radiolucent lines in the humeral component of shoulder arthroplasty. Thirty-two shoulder prostheses were assessed independently, on two occasions, by five observers. The level of inter- and intra-observer agreement was calculated using the kappa statistic. Intra-observer agreement: the overall kappa values ranged from 0 to 0.6, meaning poor, fair and moderate agreement levels. Inter-observer agreement: when the anteroposterior (AP) views were analysed, the values obtained for the bone-cement interface ranged from 0.290 to 0.539, meaning a poor-to-moderate agreement. For the cement-implant interface, the values ranged from 0.064 to 0.684, meaning a poor-to-good agreement. When radiolucent lines of the humeral component were analysed, inter-observer agreement proved to be as low as that obtained when total hip or knee components were analysed. Intra-observer agreement showed better results.
authors.affiliation: Department of Orthopaedics, Hospital del Mar, Barcelona, Spain. 86925@imas.imim.es
authors.forename: Carlos
authors.initials: C
authors.lastname: Torrens
authors.forename: Santos
authors.initials: S
authors.lastname: Martínez-Díaz
authors.forename: Aina
authors.initials: A
authors.lastname: Ruiz
authors.forename: Alberto
authors.initials: A
authors.lastname: Gines
authors.forename: Enrique
authors.initials: E
authors.lastname: Cáceres
mesh_terms: D001178:Arthroplasty / Q000379:methods*; D001843:Bone Cements; D006801:Humans; D006811:Humerus / Q000000981:diagnostic imaging / Q000601:surgery; D007595:Joint Prosthesis; D015588:Observer Variation; D011859:Radiography; D015203:Reproducibility of Results; D012785:Shoulder Joint / Q000000981:diagnostic imaging* / Q000601:surgery*
chemical_list: D001843:Bone Cements