[Quantitative determination of spongiosa formation of tibial cortical bone following knee joint total prosthesis implantation].

Cancellization always occurs following implantation of total knee joint replacements. In the study reported here the extent of the cancellization process at the tibia corticalis was investigated; it was found that the extent of cancellization differs according to the height and the time factor. The danger of cancellization as a risk to the joint prosthesis is pointed out with reference to a case in which a fracture occurred. The problem of isoelastic joint prostheses as alternatives for avoiding cancellization is discussed.