engleski

Secular changes of pelvis in Croatian perinatal population

The goal of the study was to examine secular changes of pelvic size in parturient women over the 25-year period from 1985-2009. Data were collected from randomly selected patients’ medical records of 2414 parturient women from four time periods (1985-1986, 1992-1994, 2000-2002, and 2007-2009). Three different pelvic measures were collected: distantia spinarum, distantia cristarum, and distantia trochanterica. Regression analyses were conducted in order to test predictors of pelvic measures. The multivariate analysis of covariance (MANCOVA) was used to test changes in pelvic measures over time, with body mass index (BMI) as a covariate variable. Results have shown that the average size of distantia spinarum, distantia cristarum, and distantia trochanterica was 249.3 mm (SD=13.7), 277.9 mm (SD=15.6), and 318.3 mm (SD=19.6), respectively. Pelvic measures were all positively related to woman's height and pre-pregnancy weight. After controlling for the BMI, there were significant changes in pelvic measures over the 25-year period and it was shown that distantia spinarum, cristarum, and trochanterica all increased (F (3, 2408) = 16.4, p<.01), especially from the 1992- 1994 period to nowdays. To conclude, parallel with secular changes of weight and height in parturient women, changes in bones are also evident. The size of pelvis in parturient women had significantly enlarged over the 25-year period.

pelvis; secular changes; distantia spinarum; distantia cristarum; distantia trochanterica

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