(Continued) 



ANTHROPOMETRY 

 SACRUM, PELVIC BONES, PELVIS 



135 



Notes: In measuring the height of the sacrum use sliding compass 

 and apply points of instrument to middle of promontory and middle of 

 anterior-inferior border of the fifth sacral vertebra. For general 

 comparative purposes measure only sacra with five segments. 



In measuring breadth apply stem of compass to the upper surface of 

 the body of the first sacral vertebra and measure the greatest expanse 

 of the lateral masses of the bone. 



The height of the ossa innominata is best measured on the osteo- 

 metric board. Apply ischium to the vertical part of the board, 

 hold bone with left hand, apply block to iliac border with right hand 

 and move bone up and down and from side to side until maximum 

 measurement is obtained. 



The breadth of the ossa innominata is best measured by the sliding 

 compass. It is the distance between the anterior and posterior 

 superior spines. 



For measuring the pelvis as a whole articulate the bones, hold with 

 both hands, invert, and secure breadth maximum of ilia on the osteo- 



1 Long branch of sliding compass applied ventrally, in median line, to anterior 

 border of lower end and to promontory. 



Breadth X 100 . 

 Height 



Slight, moderate, pronounced. 



4 Name segment (from above). 



8 Mean breadth X 100 . 

 Mean height 



Pelvis held together with bones in natural position; the breadth is the bi-iliac 

 maximum, and can be taken handily on the osteometic board, or by a second person 

 wit^ the large sliding compass. 



7 Breadth X 100 



Mean height of ossa innominata 



8 From promontory of the sacrum to the nearest point on the ventral border of 

 the pubic bones. 



