This study investigated the variability of os coxae's volume and linear morphometry in 50 dry adult bones. There was a wide variability, with coefficients of variation exceeding 30%, of the bones' volumes (mean 142ml, range 80 to 300ml) and distances between the acetabular rim and the horizontal plane through the sciatic notch (mean 10.6mm, range -7 to 19mm). The smallest width of the ilium ranged between 3 and 9mm at a level between 1.5 and 4cm above the acetabulum. The volume of os coxae correlated with the acetabular diameter (r=0.79), the height of os coxae (r=0.88) and antero-posterior length of the ilium at mid-acetabular level (r=0.70). Knowledge of the variability of os coxae may be useful during preoperative planning in primary and revision hip arthroplasty.