100 



Bones of the Upper Extremity. 



Os sea ph . Os sernttunare 



M.abducipollic.brev. 



Os\trapezmm ^ Oroovef.t. 



M.flex.carp.radial. 

 Os trapezoid 



"OS: 



jollic.Dpevis 



M.flexop pollic. 

 brevis 



Os cuneiforms 



Osmaqnum 



M.abduct.dignn> 



M.flex.carp.ulnar. 

 Os unciforme 



.. M.flexor brev. \^ M 



M.flexor pollic. dig , mini 9 M.oppon.d.g-.mm. 

 brevis 



133140. The Bones of the Right Wrist, Ossa carpi, 



from the palmar side. 



Each bone presents six surfaces: a superior, an inferior, 

 a posterior or dorsal, an anterior or palmar, an internal 

 or u 1 n a r and an e x t e r n a 1 or r a dial surface. The dorsal surface 

 of all the bones is convex, the palmar surface concave. The concavity 

 of the palmar surface of the carpus is bounded by four prominences, 

 Emimntiae carpi radiah** and uliuirex, one at the outer and one at the 

 inner extremity of each row. The tubercle of the scaphoid bone and the 

 ridge on the trapezium form those at the outer, the pisiform bone and 

 the unciform process of the unciform bone those at the inner extremity. 



