The Total Condylar knee prosthesis was employed at our institution from April 1975 to October 1986; currently the posterior stabilized type is in use. The results of 100 knee arthroplasties using the Total Condylar I prosthesis, 83 of which were reviewed after an average of 7 1/2 years (maximum 14), were rated good or excellent in 82% of the subjects. Three cases were considered failures due to infection or aseptic loosening. According to the survivorship analysis, there is a 14-year success rate of 93%.