Anchylosis after Tuberculosis of Knee. 45 



The knee-joint has been fixed at a right angle. The 

 patella is anchylosed to the front of the outer condyle, the back 

 of -which is sunk into and partially anchylosed to the outer 

 tuberosity of the tibia. The inner condyle is separated from 

 the inner tuberosity by about half an inch. No new periosteal 

 bone has been formed. The substance of the bones is very 

 greasy. 



Sir Charles Bell states that "this kind of distortion is 

 owing to the patient's twisting his leg round the crutch." 



B. C. II. M. 28. 



7. 85. Anchylosis after Tubercular Arthritis.— Bones of a 



left knee-joint — macerated, and showing anchylosis in the flexed 

 position. 



The patella, which is anchylosed to the under surface 

 of the outer condyle, has had an imperfect false joint between 

 its lower edge and the front of the inner tuberosity of the tibia. 

 The back of the inner condyle of the femur is adherent to the 

 inner tuberosity of the tibia, the line of junction being irregular, 

 and having been formed chiefly of fibrous tissue, now for the 

 most part macerated away. The outer condyle of the femur has 

 not been in contact with the corresponding tuberosity of the 

 tibia, which, however, has been greatly absorbed. 



The tibia has been pulled backwards and rotated out- 

 wards upon its inner tuberosity, so that the outer tuberosity is 

 proportionately more dislocated than the inner. The bones are 

 light and greasy. Active disease seems to have entirely 

 ceased. G. C. 1003. 



7. 86. Anchylosis after Tubercular Arthritis.— Bones of a 



left knee-joint — macerated, showing anchylosis in the flexed 

 position and distortion. 



The patella is anchylosed chiefly by fibrous tissue ta 



