ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In total hip prosthesis (THP), we have been using alumina ceramic femoral heads to reducepolyethylene debris and the modified cementing technique, which was named “interface bioactivebone cement (IBBC)” method to improve implant fixation. In this study, we investigated thelong-term clinical performance of THPs with an alumina ceramic head and IBBC method. From 1986to 1988, 285 joints (215 patients) were operated on by a senior surgeon, and 265 joints (192 patients)could be followed up. The presence of radiolucent lines, loosening, osteolysis andultrahigh-molecular-weight polyethylene (UHMWPE) socket wear were observed. In IBBC, aradiolucent line appeared as a ’space’, and loosening appeared as a ’separation’ between the HA layerand the cement. A ‘space’ appeared in 3 joints (1.4%) on the acetabulum and in 4 joints (1.8%) on thefemur, while a ‘separation’ appeared in 3 joints (1.4%) on the acetabulum. Osteolysis was noted in 1joint (0.5%) on the acetabulum and in 2 joints (0.9%) on the femur. No revision surgery was required.In our previous study, we reported that the thickness of the socket affected its clinical wear rate andthat the wear rate of sockets with an alumina ceramic head was 20% lower than that of sockets with ametal head. By reducing wear debris through the use of ceramic heads, osteolysis could be reduced.Long-term fixation of THPs to the bone has been achieved by using IBBC. Thus, the long-termclinical results of THPs with an alumina head that were fixed using IBBC were excellent
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.361-363.1303.pdf
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