183 
ANATOMY OF THE HORSE. 
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the tibia, inclosing the latter muscle in a complete sheath. Be¬ 
yond this, the anterior faschia becomes continuous with the 
posterior. 
The chief attachments of the posterior division of the faschia 
are, the condy les, and postero-inferior part of the body of the 
femoral bone; the postero-lateral parts of both extremities of 
the tibia, and the entire inner side of its body ; the lateral liga¬ 
ments of the hock ; and the tendinous point of the os calcis. 
1—ANTERIOR FEMORO-CRURAL REGION. 
Of the muscles situated in this region, two are extensors of the 
leg and foot, and at the same time aiders in the flexion of the 
hock: the other is a direct flexor of the hock. They are all three 
bound down to the tibia by a strong tendinous faschia. 
extensor pedis. — Femoro-prephalangeus. 
Situation .—Superficial: anterior part of the leg. 
Form. —Elongated; fusiform: flattened from before back¬ 
wards. 
Attachment. —Superiorly, to a roughened depression upon 
the antero-inferior part of the external condyle of the femoral 
bone. Inferiorly, to the coronal process of the os pedis, to the 
superior edge of the bone in the interval betw een the lateral 
cartilages. 
Relations. —Anteriorly, with the faschia and skin, and the 
aponeurotic tendon of the biceps ; postero-externally, w ith the 
peroneus; postero-internally, with the flexor metacarpi; poste- 
ro-superiorlv, with the capsular ligament of the stifle joint, the 
tendon passing through a groove upon the front of the tibia. 
Structure .— lhe muscle commences, superiorlv,by a small flat 
tendon, which is common to it and the flexor metatarsi. Upon 
the tibia it becomes fleshy, exhibiting tw o or three thin tendi¬ 
nous intersections, together with aponeurotic surfaces. A little 
above the hock the fleshy belly ends in a flat tendon, which takes 
its course in front of the hock through a theca prepared for it, 
and upon the cannon (about one-third of its length downw ard) 
enters into union with the tendon of the peroneus, and so inti¬ 
mately that the two tendons appear but as one until they have 
descended as low as the fetlock joint, over which they disunite 
and again run separate. As it passes the front of this joint, the 
extensor tendon expands itself, and continues to do so to its ter¬ 
mination. 
Action .—In consequence of this tendon being bound down 
upon the hock by the sheath through which it passes, it w ill have 
effect in flexing that joint, at the time it is performing its own 
