High failure rate of cementless threaded acetabular cups: a radiographic and histologic study in the goat.
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.
Bruijn
J D
JD
Department of Orthopedics, Leyenburg Hospital, The Hague, The Netherlands.
Seelen
J L
JL
Veldhuizen
R W
RW
Feenstra
R M
RM
Bernoski
F P
FP
Klopper
P J
PJ
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