[Follow-up of patients with knee endoprostheses of the orthopedic clinic of the Dresden "Carl Gustav Carus" Medical Academy]. / Nachuntersuchungen von Patienten mit Knieendoprothesen der Orthopädischen Klinik der Medizinischen Akademie "Carl Gustav Carus" Dresden.

A report is given about an examination of 143 knee prostheses which were implanted between 1973 bis 1983. After biomechanic points of view the used prostheses were divided in four types. Very good to good results were found there in 70-80% of cases. Most positive results were reached by the so called sledge prostheses. In 44% of cases there were observed complications. The rate of complications is about 12% higher by patients whose basic disease is pcP.

[The production of eluates for testing acute cytotoxicity by a new method]. / Herstellung von Eluaten zur Testung der akuten Zytotoxizität nach einem neuen Verfahren.

In vitro tests of new biomaterials require internationally and nationally eluates increasingly. Only the extracted substances become effective in the cells in that way. The material surface has the greatest influence on the quantity of the released substances by elution. The surface of diverse undefined mixture quantities is definable exactly by means of a gas adsorption method (BET method). The influence of the secondary technologies was tested by the atom adsorption spectrometry. The Jena bioglass ceramics could be estimated successfully by this method.