Assessment of radiolucent lines in cemented shoulder hemi-arthroplasties: study of concordance and reproducibility.
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.
Torrens
Carlos
C
Department of Orthopaedics, Hospital del Mar, Barcelona, Spain. 86925@imas.imim.es
Martínez-Díaz
Santos
S
Ruiz
Aina
A
Gines
Alberto
A
Cáceres
Enrique
E
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*
D001843:Bone Cements