Type A was described as being round; Type B was elliptical with the largest anteroposterior diameter; Type C was elliptical with the largest transverse diameter; Type D was elliptical with a large oblique diameter
from right to left; Type E was elliptical with a large oblique diameter
from left to right; Type F was triangular; Type G was square; Type H was rectangular; Type I was kite-shaped; Type J was leaf shaped; Type K was a semicircle; Type L was irregularly shaped and Type M was termed double bubble (incomplete double).
The primary outcome was improvement in skull shape at age 24 months as measured by the oblique diameter
difference index (ODDI), a unitless measurement of plagiocephaly calculated by taking the ratio of measures of 2 dimensions of cranial diameter, and the cranioproportional index (CPI), a similar measurement of brachycephaly.
In this study, on the basis of literature [15, 16], transverse diameters (dorsal transverse, intermediary transverse, ventral transverse, cranial transverse, caudal transverse, and medial transverse diameters), oblique diameters (right oblique diameter, left oblique diameter, right sacrocotyloid diameter, and left sacrocotyloid diameter), conjugate diameters (conjugata vera and conjugata diagonalis), vertical diameter, pelvic inclination, and angle between arcus ischiadicus were measured (as shown in Figures 2-5).
(7) Right oblique diameter: line/diameter from the right sacroiliac joint to the left iliopectineal eminence (Figure 2).
(8) Left oblique diameter: line/diameter from the left sacroiliac joint to the right iliopectineal eminence (Figure 2).
When measurement values of cranial and caudal pelvic cavities having importance during birth were considered, the mean values of dorsal transverse diameter (22.5 mm), right oblique diameter (29.05 mm), left oblique diameter (27.98 mm), and vertical diameter (22.48 mm) which belong to cranial pelvic cavity of females in New Zealand rabbits were higher than the mean values of dorsal transverse diameter (20.95 mm), right oblique diameter (24.69 mm), left oblique diameter (25.80 mm), and vertical diameter (20.34 mm) of males and were statistically significant.
There were not any statistical differences between males and females in ventral and intermediary transverse diameter, oblique diameter, and conjugate vera in dogs .
According to biometric measurements of pelvic cavity diameters belongs to males and females, there was statistical difference between dorsal transverse, cranial transverse, caudal transverse and medial transverse diameters among transverse diameters of pelvis, between right oblique and left oblique diameters among oblique diameters of pelvis, between conjugata vera and conjugata diagonalis among conjugate diameters of pelvis and between vertical diameter; inclinatio pelvis and the angle between arcus ischiadicus and these values were higher for females than males.