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dc.contributor.authorBrumby, S.en
dc.contributor.authorHowie, D.en
dc.contributor.authorPearcy, M.en
dc.contributor.authorWang, A.en
dc.contributor.authorNawana, N.en
dc.identifier.citationClinical Orthopaedics and Related Research, 1998; 355(355):229-237en
dc.description.abstractThe macroscopic, radiographic, and histologic features of the prosthesis-cement and cement-bone interfaces and adjacent bone were studied in 21 cemented hemiarthroplasties in sheep that had lived until sacrifice at 9 months. The features were compared with those immediately after implantation of the stem in the contralateral femur. The femoral stem was a double taper that was either polished collarless, matte collarless, or matte collared. There was no prosthesis to cement debonding or cement to bone radiolucent line immediately after implantation, and there was excellent interdigitation at the cement-bone interface. After 9 months there was no evidence of prosthesis to cement debonding and no stem with definite loosening. At 9 months after implantation there was evidence of bone remodeling with new bone filling what were presumed to be gaps at the cement-bone interface from immediately after implantation. Radiolucent lines at the cement-bone interface were found to represent trabeculation of the cortical bone rather than the presence of a complete fibrous interface, which was not seen. There was no difference between stem types. Sheep have been shown to be useful in a model of cemented hip arthroplasty and, although no differences were seen between stem types at 9 months after implantation, long term differences cannot be excluded.en
dc.rights© 1998 Lippincott Williams & Wilkinsen
dc.subjectAnimals; Sheep; Disease Models, Animal; Prosthesis Failure; Bone Cements; Arthroplasty, Replacement, Hip; Prosthesis Design; Equipment Failure Analysis; Materials Testing; Hip Prosthesis; Bone Remodeling; Osseointegration; Surface Properties; Time Factorsen
dc.titleRadiographic and histologic analysis of cemented double tapered femoral stemsen
dc.typeJournal articleen
pubs.library.collectionOrthopaedics and Trauma publicationsen
dc.identifier.orcidHowie, D. [0000-0003-1702-3279]en
Appears in Collections:Orthopaedics and Trauma publications

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