174 PEINOIPLES OF VETEEINAET SUBQEET 



Palpation : Crepitation, usually pronounced. Prognosis 

 doubtful. 



6. Fracture of the tuberosity of tbe ischium. Inspection: 

 Swinging-leg lameness ; before swelling sets in, the affected 

 region appears broader, later there is swelling, involving 

 rectum and vagina. Palpation : Crepitation more or less 

 marked. Prognosis doubtful. 



7. Fracture in the cotyloid cavity. Fractures through or 

 close to the symphysis pubis almost invariably demand an 

 unfavorable prognosis (for details, see my work on "Tha 

 Clinical Diagnosis of Lameness in the Horse")- 



8. Fracture of the os suffraginis. Due to jumping .and 

 missteps, sudden turning, slipping, etc., the fracture may ha 

 a complete or, as is quite frequently the case, only a fissured 

 one. Inspection: Supporting-leg lameness, possibly deform- 

 ity and abnormal mobility. Fissured fractures, while caus- 

 ing severe lameness, still permit the animal to support some 

 weight. Palpation : More or less crepitation and abnormal 

 mobility; artificial rotation produces great pain. In fissured 

 fractures, palpation along the extensor pedis tendon may 

 elicit a painful line, switching off to one side or tha 

 other (usually the outer one). Prognosis : In complete 

 fractures, doubtful ; in fissured fractures, healing with a 

 plaster of paris dressing may occur in six to eight 

 weeks. 



9. Fracture of the os corona ; fracture of the os pedis. 

 The same rules, generally speaking, apply to those as given 

 under fracture of the os suffraginis. 



10. Fracture of the femur. Due to falls, drawing the 

 hind leg up as high as the elbow when tying the animal for 

 operations. Lameness is severe. Crepitation usually well 

 marked, also abnormal mobility. Prognosis is unfavorable. 



