RATES OF TIBIAL OSTEOTOMIES IN CANADA AND THE UNITED-STATES

This study determined the temporal trends and factors associated with the rates of performance of tibial osteotomies from 1985 to 1990 in On tario, Canada and the United States, The Health Care Financing Adminis tration, Ontario Health Insurance Plan, and National Hospital Discharg e Survey databases were used to determine the number of osteotomies fr om 1985 to 1990, Osteotomy rates decreased in both countries approxima tely by 11% to 14% per year in patients 65 years and older and by 3% t o 4% per year in patients younger than 65 years, Men received twice as many osteotomies as women in both countries, In the United States, th e average rate of tibial osteotomies was 2 to 3 times lower than in On tario.