Tlic. X1X.— Two navicular bones, seriously excavated by disease, illustrating how fracture 
of that bone may occur. Upper row, Inferior surface of navicular bones. Lower row, The same 
bones cut transversely and showing extensive excavation in the interior, largely destroying the 
strength of the bone. 
Fic. XX.— “ Breaking down’”’ after neurotomy for navicular disease. 
F. C.. Flexor conona tendon. 
F. P., Flexor pedis tendon. 
O. N., Navicular bone. ’ 
In the left-hand specimen the flexor pedis tendon has torn away from the pedal bone, the torn 
end resting at postero-superior portion of os corona, while other posterior ligaments have given 
wa ermitting great displacement of phalanges. } i j 
ae the Rene aaa figure the navicular bone has been displaced along with the flexor pedis ten- 
don. In neither case is the tendon ruptured, but torn away from the bone. 
