334 FASCLE AND MUSCLES OF THE HORSE 
Structure.—The origin is by means of a strong tendon in common with the 
peroneus tertius, on which also many fibers arise. The common tendon passes 
downward in the groove between the lateral condyle and the tuberosity of the tibia, 
| 
. ~~ Gastrocnemius, lateral head | 
Crest of tibia ----- } \ Wa...) a 
y \ Soleus 
‘Saarige se Tendon of gastrocnemius 
Long digital extensor ----------§ ------= Tarsal tendon of biceps femoris 
Lateral digital extensor ------------ 
~~-._._ Superficial 
co’ flexor tendon 
Proximal annular ligament ---- 
Lateral malleolus ------~ 
Middle annular ligament .--------' 
Distal annular ligament -_-___- 
Tendon of long extensor ---________ 
Tendon of lateral extensor--________ mL Superficial flexor ‘ 
~~~ tendon 
Deep flexor tendon 
Suspensory 
ligament 
Branch of suspensory ligament to 
extensor tendon ~~ 
Fig. 292.—Mvuscies or Lower Part or Tuicu, Lec, anp Foot or Horse; LATERAL VIEW. 
The extensor brevis is visible 
o, Fascia lata; q, 9’, 9, biceps femoris; r, semitendinosus; 21’, lateral condyle of tibia. 
(After Ellen- | 
in the angle between the long and lateral extensor tendons, but by an oversight it is not marked. 
berger-Baum, Anat. fiir Kiinstler.) 
where a pouch from the femoro-tibial capsule descends three or four inches (ca. _ 
7.5 to 10 em.) beneath the tendon. The belly is fusiform and somewhat flattened. [ 
The long tendon of insertion begins in the belly about its middle, and is clear of the - 
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