[Radiological evaluation of polyethyelene wear of cementless total hip endoprosthesis].
During the last years increasingly cementless hip endoprostheses have been implanted. Radiological wear measurement of cemented hip endoprostheses for the material couples polyethylene cup-ceramic- or metal head has been established in the literature. However, for cups encased by metal (screwing or pressfit cups), this method of measurement is not applicable. Therefore, a method has been developed to measure wear on radiographs on cementless spherical implants. The data were compared to those, obtained from conventional wear measurements on cemented hip cups. The results indicate that both techniques generate comparable results, thus validating the new technique as being suited for cementless cup implants.
Sander
K
K
Klinik für Orthopädie, Friedrich-Schiller-Universität Jena am Waldkrankenhaus Rudolf Elle gGmbH Abt. Biomechanik Klosterlausnitzer Str. 81 D-07607 Eisenberg. i7veru@rz.uni-jena.de
Roth
A
A
Layher
F
F
Babisch
J
J
Venbrocks
R
R
D002484:Cementation; D019544:Equipment Failure Analysis / Q000379:methods*; D005260:Female; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000601:surgery*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging* / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D020959:Polyethylene; D011475:Prosthesis Failure; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D020959:Polyethylene