REGIONAL ANATOMY 



19 



by the superior carpal ligament, passes through the carpal 

 and metacarpo-phalangeal sheaths, and, arriving behind 



Fig. 11. — The Flexor Perforans and Flexor Perforatus 

 Tendons. 



The metacarpo-phalangeal sheath and the ring of the perforatus laid 

 open posteriori}', and the cut edges reflected to show the passage 

 of the perforans. 



1, Reflected cut edges of tlie perforatus ring and the metacarpo-phalangeal 

 sheath ; 2, the perforans tendon ; 3, point of insertion of the perforans 

 tendon into the semilunar crest of the os pedis (this widened and 

 thickened extremity of the perforans is known as the plantar aponeurosis). 



the fetlock, forms a ring for the passage of the flexor 

 perforans. Its termination is bifid, and it is inserted on 

 either side to the lateral surface of the second phalanx. 



'2—2 



