354 Diseases of Bone. 



bent towards the fibula, and is fused with it at a place corre- 

 sponding to the fusion on the right side. The connecting bridge 

 of bone is thrown out into numerous large irregular processes, 

 the tips of which are deficient, as if they had been covered by 

 cartilage when recent. At one spot, on the outer side, what 

 seems to be the remains of an articulation between the tibia 

 and fibula is perceptible. The rest of the upper end of the 

 tibia is little altered, except at the posterior and inner sides, 

 where the same spinous processes are seen. The lower ends 

 of both bones are fused into one common mass, and the bone 

 seems to have been broadened out. A few spinous projections 

 are seen at the lower end of both bones. As on the other side, 

 ossification has not occurred in the interosseous membrane. 



(For an account of this condition, see "Arch, fiir Klin. 

 Chir.," Band 41, p. 420.) B. C. i. 6. M. 20 to 23. 



6. 378. Exostosis of the Tibia and Fibula.— Upper end of a 



right tibia and fibula — macerated, illustrating the above. 



There is an anchylosis of the two bones a little below their 

 usual place of joining, which is very like the condition found in 

 the previous specimens. It may be considered to be due to a 

 bony outgrowth from each bone towards the other. 



B. C. II. M. 34. 



6. 379. Exostosis of Clavicle. — Left clavicle of an adult — 

 macerated, illustrating the above. 



The bone is stunted in growth. A large irregular mass 

 projecting downwards from the outer end is continuous with 

 the articular surface, which is thus much enlarged. Some 

 irregular nodules project downwards from near the inner end, 

 and seem in the recent state to have been capped with cartilage. 

 The normal curves of the bone have been straightened. 



B. C. I. 6. IsL 16. 



