Alteration in Pelvic Inclination & its Correlation with Lumbar Lordosis in Pregnant Women

A cross sectional comparative study to explore whether pelvic inclination angle [PIA] alters during third trimester & correlates with associated alteration if any in lumbar lordosis angle [LLA] in primigravid women

PIA & LLA were measured with pelvic inclinometer & Flexirular respectively in a convenient sample of 100 Primigravid healthy women carrying single foetus in third trimester of pregnancy within age group of 21.61 + 2.29 years & 100 healthy age matched [22.07 + 2.41years] nulliparous controls. SPSS 16 soft ware was used to calculate unpaired t value with 95% confidence interval for comparing PIA & LLA respectively between two groups and Intra-group Correlation coefficient [r value] between PIA & LLA in both groups.

PIA in study & Control groups was found to be 3.340 2.57 & 5.140 2.82 respectively where as LLA was 37.750 12.87 & 44.880 12.36 respectively. Comparison of PIA & LLA between groups showed highly significant decrease [p < 0.0000 & p < 0.0001respectively] in both variables in study group suggesting posterior tilt associated with lumbar flattening. In both groups Intra-group correlation showed moderate correlation between PIA & LLA [r=0.66 in study group & 0.6 in controls]

Study showed significant decrease in PIA & LLA in Pregnant women. The LLA & PIA correlated moderately in both the groups.