title: High failure rate of cementless threaded acetabular cups: a radiographic and histologic study in the goat.
abstract: We studied the fixation of the Mecron cementless titanium screw cup radiographically and histologically in 20 dwarf-goats after periods of 0, 6, 26 and 52 weeks. In only 3 goats did histology show good bone-implant contact, whereas in the other 17 goats a fibrous membrane interface was seen. This high failure rate is caused by the poor primary fixation and should be a warning against the use of this implant.
authors.affiliation: Department of Orthopedics, Leyenburg Hospital, The Hague, The Netherlands.
authors.forename: J D
authors.initials: JD
authors.lastname: Bruijn
authors.forename: J L
authors.initials: JL
authors.lastname: Seelen
authors.forename: R W
authors.initials: RW
authors.lastname: Veldhuizen
authors.forename: R M
authors.initials: RM
authors.lastname: Feenstra
authors.forename: F P
authors.initials: FP
authors.lastname: Bernoski
authors.forename: P J
authors.initials: PJ
authors.lastname: Klopper
mesh_terms: D000818:Animals; D006041:Goats; D006622:Hip Prosthesis; D008854:Microscopy, Electron; D016348:Osseointegration / Q000502:physiology; D011183:Postoperative Complications; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013997:Time Factors