676 



Veterinary Obstetrics 



c. Unhealed Fractures of the Pelvis. We observed in 

 one case a fracture of the pelvis in a sucking filly, Fig. 112, 

 which was broken down by a large stallion. There was a dis- 

 location of the sacro-iliac articulation, a green-stick fracture 

 through the acetabulum, and a fracture through the shaft of the 

 ilium. The latter failed to heal, but the filly recovered sufii- 

 ciently to get about. She was crippled, but in good flesh and vig- 

 orous. Later she was bred without the pelvis having been ex- 

 amined. At foaling time we were called, because of severe 

 dystokia, and found the fetus presenting normally at the pelvic 

 inlet ; but the pelvic canal was very constricted, and whenever 

 we applied traction to the fetus it seemed to recede instead of 

 advance. The foal could not possibly be extracted by traction 

 because, on account of the non-united fracture on the one side 



Fig. 113 a. Callus due to Dislocation of thb Femur' 

 OF Cow through thf; Foramen Ovale. 

 A. Acetabulium. B. Exostosis from permanent dislocation 

 of femur through foramen ovale. 



