Sacroiliac Joint of the Horse 2. Morphometric features

The sacroiliac joints were collected from 41 horses from late fetal life to 14 years of age. The sacral and iliac articular surfaces were analysed by morphometry with regard to area, length, width and form factor. The body weights of the animals varied from 10 to 550 kg and the sacral articular surface area from 1.0 to 17.8 cm2. Highly significant correlations were found between articular surface dimensions and body weights. Accordingly, the relative size of the joints decreased with increasing body weight/age. The sacral and iliac measurements were essentially comparable. No consistent left‐right sidedness was found and no significant sex or breed differences were present.