DISPLACEMENT OF THE PREGNANT UTEKUS 163 



While some assistants roll the cow from the right side 

 upon her back, the obstetrician introduces the clean, well oiled 

 hand into the vagina and attempts to follow the folds as far as 

 possible. 



In torsion of 90 degrees to 180 degrees he even succeeds 

 in entering the uterus, and the possibility exists to fix some 

 part of the calf and in this way retain the uterus and calf while 

 the assistants roll the cow. After the cow is rolled on her 

 back she is rotated until lying upon the left side. The obliter- 

 ation of the spirals is immediately perceived by the hand in the 

 vagina, provided retorsion is successful. In quarter and half 

 torsion this rotation is mostly sufficient, especially when the 

 cervix uteri is open and the hand can be advanced and hold 

 the calf in position. 



In order to assist the obstetrician in the attempts to fix 

 uterus and calf, pressure should be exerted upon the calf along 

 the flank. 



Torsions of 360 degrees or more do not allow the hand to 

 enter the uterus or fix the calf. Felder, in such cases, tries to 

 get hold of the foetus through the wall of the vagina, he look- 

 ing upon this as the vital point in rotating the mother. When- 

 ever this method is practiced great care is required, as the 

 uterus may be ruptured. 



When the calf and uterus rotate with the cow— frequently 

 the case in large calves— rotation in the same direction must 

 be repeated, while the exploring hand attempts to reach the 

 uterus. 



In some descriptions repeated rotations of the cow are 

 spoken of; for instance, from the right side, over the back, 

 onto the left side, over the belly, again to the right side, etc. 

 In fact, we may achieve our purpose in this manner. At the 

 same time I believe that such continuous rotations ought only 

 to be practiced when the hand cannot enter into the uterus. 



I succeeded several times in correcting a half torsion as fol- 

 lows : In half torsion to the right I place the cow upon the left 

 side, and permit the hand to follow the spirals into the uterus. 

 After tying the fore and hind legs separately, the cow is rolled 



