The biorhythmic characteristics of age structure in patients subjected to revision endoprosthetics of the hip

The authors studied the case histories of 297 women at the age of 24-86 years and 185 men at the age of 24-82 years who were subjected to revision endoprosthetics of the hip for aseptic loosening of their endoprostheses in the period of 1990-2002. It was found that patients' age structure changed variably. For women an average length of the period of revision density amounted to 6,9 years (=1,7 years) and for men - to 7,3 years (=2,7 years). Comparison of the variation curves showed the close values of maximi noted at the age of 45-46 years and those of minimi at the age of 54-55, 63 and 75-76 years. Proceeding from the fact that the age dynamics of the progressing reaction of foreign body rejection had a cycle of approximately seven years, it was supposed that this time interval corresponded to the cycle of regulatory-and-metabolic shifts in the age periodization of processes with ageing.