[Epidemiologic study of femoral neck fractures in the province of Parma (1980-1992)].

Fractures of the femoral neck are one of the most important and severe complications of osteoporosis. To obtain up-to-date estimates on the frequency of these fractures in the province of Parma, a city of northern Italy, a retrospective study on the incidence of hip fractures has been carried out examining the operative records of all the orthopedic departments serving the whole province. Between January 1980 and December 1992, 3774 operations for hip fractures were performed, with a marked prevalence in women (2830 women and 944 men) and an exponential increase with age in both sexes. The incidence of extracapsular hip fractures was slightly higher and in women increased more rapidly with age than intracapsular fractures. Approximately 3 fractures out of 4 in women and 2 out of 3 in men occurred after the age of 75. Between 1980 and 1992, the age-adjusted annual incidence rose significantly by 7.1 cases per 100,000 per year in women and by 2.7 cases per 100,000 per year in men. When compared to other populations, these estimates indicate that the incidence of hip fractures in this province of Northern Italy is lower than that reported in other countries, especially in Northern Europe.