Results of endoprosthetic hip joint replacement with the aluminum ceramic-metal composite prosthesis “lindenhof”

Abstract

The first clinical results of the Lindenhof ceramic-metal composite prosthesis implanted in our hospital in Freiburg are presented. We observed that same favorable early results as the conventional prostheses in a correct position. The implants are incorporated into the bone within 8-12 weeks. The radiographic films show the adaptation of the supporting bone around the ceramic socket. We explain the failures due to our initial lack of technical experience and/or anatomical deformation of the pelvic bone. complications caused by the post-operative treatment during the 12 weeks following surgery did not occur. The combination of a cemented metal femoral component with a ceramic head seems to be a reasonable compromise to use the favorable physical and biochemical properties of the bioceramic material as long as there is no satisfactory solution for a stable cementless fixation of the femoral stem in to the bone. The advantages of the Lindenhof prosthesis predominate the disadvantages: expensive instruments and a post-operative treatment of several months.

Al2O3 against Al2O3 combination in hip endoprostheses. Histologic investigations with semiquantitative grading of revision and autopsy cases and abrasion measures

“…Many investigations have shown predominantly good clinical results [8][9][10][11][12][13][14]. Some authors, however, reported a higher rate of ceramic components from postheses retrieved at revision surgery [15]; excessive wear is initiated when ceramic grains are torn from the high-gloss polished articular surfaces.…”