Anchylosis after Tuhcrculosis of Knee. 457 



tlie back of the joint. On the side of the inner condyle the 

 shreddy wall of a tubercular abscess can be seen laid open. 



G. C. 3230. 



Presented by A. G. Millki;, F.R.C.S.E. 



7. 79. Tubercular Arthritis, breaking out after Sub- 

 sidence. — Outer section of the bones of the previous knee- 

 joint- — macerated, to show the changes on the articular surface 

 and the absorption of bone. 



The cartilage was entirely removed from the articular 

 surfaces, which are altered in shape and irregular on the surface. 

 The adjacent parts of the tibia and femur show slight erosions, 

 partly smoothed over. The trochlear surface of the femur 

 and articular surface of the patella show rarefaction, also 

 smoothed over. Irregular spicules of periosteal bone roughen 

 the tibia and femur near the articular surfaces. 



G. C. 3231. 



7. 80. Tubercular Arthritis with Developing- Anchylosis. 



— Bones forming a right knee-joint — partially macerated and in 

 spirit. The bone has apparently been accidentally broken in the 

 process of preparation, and the broken pieces are held together by 

 threads. 



The bones have been fixed in the flexed position. The 

 interior of both femur and tibia has been greatly absorbed, and 

 the bone has been soft and fatty. The patella is united, 

 apparently by bone, to the front of the articular surface of the 

 outer condyle, and the inner condyle and inner tuberosity of 

 the tibia are united partly by bone and partly by fibrous tissue. 



The inner condyle and inner tuberosity of the tibia are not 

 in contact. W. C. H. 41. 



