Abstract
Alumina ceramic has been tried out as the material for the head of the femoral stem instead of the former H.D.P and metal combination, using a Weber-Stuhmer type with a 32mm diameter head on 433 joints. The longest clinical follow-up is 7 years.
The results with 100 joints more than 5 years after operation were shown to be quite good by the J.O.A score. Clinical wear rates of 0.09mm/year is also satisfactory.
We believe that by the use of alumina ceramics, the durability of T.H.R. will be improved and the age indication expanded.
