Tubercular Ostitis involving Hip-joint. 467 



tipper end of the femur is rough and opened out, and the hone 

 is ahsorbed, especially upon its anterior and upper aspects. 



B. C. II. M. 3. 



7. 105. Tubercular Arthritis involving the Acetabulum. — 



Plaster cast, coated with wax, of the pelvis and thighs of the 

 patient from whom the previous specimen was obtained. 



There is marked adduction of the diseased hip-joint, with 

 tilting of that side of the pelvis, and swelling round the troch- 

 anter. The ulcers on the outer side of the thigh have a 

 characteristically tubercular appearance, and have, no doubt, com- 

 municated with the joint. B. C. ii. M. 2. 



7. 106. Tubercular Arthritis destroying- the Aceta- 

 bulum. — Left ilium and upper end of femur — macerated, 

 illustrating the above. 



"The neck of the thigh bone was in the pelvis. The patient was 

 exhausted by irritation and suppuration." 



The bottom of the acetabulum is wanting, and a circular- 

 aperture of one and a half inches in diameter thus leads into 

 the pelvis. The remains of the walls of the acetabulum are 

 rarefied and rough. There is a considerable development of 

 new bone round the outer surface of the acetabulum. The 

 head of the femur is wasted down to a pointed extremity. 

 New periosteal bone has been formed on the under and front 

 aspects of the neck. 



This has evidently been a case where septic abscess has 

 complicated the original disease. B. C. ii. M. 5. 



7. 107. Tubercular Arthritis destroying- the Acetabulum. 



— Right innominate bone of a young person — macerated, illus- 

 trating the above. 



The bottom of the acetabulum is wanting, and an irregular 

 cavity one and a quarter inches by two inches in diameter thus 



