HOG TIIK MUSCLES. 



i\ phalangeal reinforcing sheath, ami finally terminates on tho seinilunar 

 crest of tho os pedis. This tendon, therefore, on leaving the tarsus, coin- 

 ports itself exactly like that of the anterior limit. 



Relations. Outwards, with tho lateral extensor of the phalanges, tho 

 soleus, and tho tibial aponeurosis. Inwards, with this aponeurosis and tho 

 oblique flexor. Behind, with the gastrocncinii, tho perforatus, and the 

 fibrous band of the tendon of the hock. In front, with tho tibia. 



Action. This muscle flexes the phalanges on one another and on tho 

 metatarsus. It may also extend the foot in pressing, during its contraction, 

 behind the tibio-tarsal articulation. In addition to this, it tendon nets, 

 while tho animal is standing, as a mechanical support to the phalanges and 

 the articular angle of tho fetlock. 



6. Oblique Flexor of the Phalanges. (Fig. 137, 22.) 



Synonyms. Peroneo-phalangeus Girard. The tibialis posticus of Man. {Flexor 

 pedis accessorius Percivall. Small tibio-phalangeus Leyh.) 



Situation Direction. A muscle situated behind tho tibia, between 

 the poplitous and the perforans, in a direction slightly oblique downwards 

 and inwards. 



Form Structure. It is composed of a fleshy fusiform body, intersected 

 by numerous fibrous bands, and provided with a funicular tendon inferiorly. 



Attachments. The superior extremity is fixed behind the external 

 tuberosity of the tibia origin. The tendon is united, by its inferior 

 extremity, to that of the perforans towards the upper third of the ineta- 

 tarsal region termination. 



Relations. The muscular portion responds : in front, to the perforans, 

 tho popliteus, and the posterior tibial artery ; behind, to the gastrocneniii 

 and the perforatus. The tendon, at first lodged in a muscular channel 

 in the perforans and covered by the tibial aponeurosis, afterwards enters a 

 tortuous sheath at the inner side of tho tarsus, and which is formed by the 

 groove that bends behind the infero-intcrnal tuberosity of the tibia. 



Action. It is a congener of the deep flexor. 



DIFFERENTIAL CHARACTERS OF THE MV6CLES OF THE LEO IN OTHEB THAN SOLIFED 



ANIMALS. 



A. Anterior Tibial Region. 



RUMINANTS. Among these animals, the Ox presents: 



1. A complex muscle, which is represented in the Horse by the anterior extensor of 

 the phalanges, and the tendinous cord of the flexor metatarsi. Single at its superior 

 extremity, which begins by a tendon arising from the digital fossa situated between the 

 trochlea and the external condyle of the femur (Fig. 138, 1), this muscle compri- 



its middle part three fleshy divisions which are terminated inferiorly by tendons. 



One of these divisions, situated in front of, and within the other two, has its tendon 

 prolonged to the superior extremity of the principal mctatan-al bone, ami is also in 

 into the cuneiform bones. It is a flexor of the mctatareal region, and replaces the 

 tendinous cord which jierforms this function in Solipeds (Kig. 138, 2). 



The second, placed without the preceding, constitutes a cmnmon extensor of the 

 di(jit, whose tendon comports itself exactly like that of the anterior limb (Fig. 138, 5, 

 .V, G) (ee p. 270). 



The third, concealed by the other two, forms the jtroper extensor of the internal dnjlt, 

 and resembles its fellow in the fore extremity (we p. 27<>)- 



2. An anterior tibial muscle (muscular poition of tin- flexor of the metitarsal of 

 the Horse,. It is a trinngulnr, muscular body, lodged in the antero-external fossa of 

 the tibia into the upper part of which it in inserted, and is succeeded by a tendon that 



