Arthritis Deformans of Hip-joint. 495 



having, on the whole, a somewhat square shape, with rounde d 

 angles. The surface departed from the spherical. The 

 depression forming the pit and groove for the round ligament 

 was compressed so as to form a mere fissure, elongated verti- 

 cally." (Struthers, Edin. Med. Journal, Jan. 1863.) 



The absorption of the top of the heads, the irregularity of 

 the articular surfaces, and the prolongation of their margins are 

 changes found in arthritis deformans. The shape of the 

 altered head is not quite characteristic, but a constant cross- 

 legged position at his work might perhaps account for the 

 peculiarity in this case. The symmetry is remarkable. 



G. C. 3479. 

 Presented by Professor John Stkutheks. 



178. Advanced Arthritis Deformans of the Hip-joint, 

 with Enlargement, Absorption, and Locking-.— Eones 



forming a left hip-joint — macerated, illustrating the above. 



There has been so much enlargement round the lower part 

 of the articular margin of the femur, and so much absorption of 

 the upper part -of the head, that the tissue of the head seems 

 as if it had been moulded roughly downwards, while the 

 great trochanter has been proportionately raised. The new 

 bone at the articular margin is very craggy and irregular, and 

 the portion of bone which was in contact with the acetabulum 

 is porous, and but very slightly eburnated, probably because 

 the irregularity of the surfaces locked the joint, and permitted 

 none but a very slight movement. The anchylosis has been in 

 the flexed position. The acetabulum is enlarged round the 

 margin, and the interior is rough and porous, with only a very 

 slight degree of eburnation here and there. The muscular 

 attachments on the ischium are rough. G. C. 2775. 



Presented by Macdonald Beown, F.R.C.S.E. 



7. 179. Advanced Arthritis Deformans.— Posterior half of the 



