Arthritis Deformans and Fracture of Hip. 497 



if ever, formed anew, far less in this disease where it is largely 

 absorbed, the alternative of downward displacement of the bone 

 seems inevitable. G. C. 921. 



7. 181. Arthritis Deformans, following Fracture of the 

 Neck of the Femur. — Upper end of a right femur and 

 acetabulum — macerated, illustrating the above. 



" The man was aged about 60 years. Ten years previous to his death 

 the patient slipped his foot upon a stone, but did not fall. Next day he 

 felt swelling in his groin, and became lame ever after. A new joint had 

 been formed. The capsular ligament was thickened, and its cavity was 

 much increased in size. The parts had become curiously adapted to each 

 other by absorjition and new dejiosition of bone, so as to admit of some 

 use of the limb." 



The head and neck of the femur are entirely wanting, and 

 the surface of the bone where the neck was attached is now 

 quite smoothed over, there being only some irregularity round 

 its margin. The acetabulum is greatly altered. A new surface 

 has been hollowed out at its upper and back part by friction, 

 evidently against the femur at the side of the neck. The 

 remains of the original acetabulum shows irregularity of the 

 former cartilaginous surface, with enlargement round about. 



Apparently there had been an intra-capsular fracture of the 

 neck, with an after absorption of the ununited head. 



G. C. 1479. 



Presented by Professor J. W. Tuener and A. "Watson, Esc|. 



182. Arthritis Deformans, following- Fracture of the 

 Neck of the Femur.— Upper end of a right femur with 

 the innominate bone — macerated, illustrating the above. 



This specimen was originally entered as a fracture in which union 

 of the fibro-cartilage had taken place. 



There is considerable irregularity all over the innominate 

 bone and femur, especially at the muscular attachments. The 

 acetabulum is filled in, but this on examination of the 

 section proves to be due to an anchylosis of the head of the 

 femur within the acetabulum. On the other hand, the head 



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