Chapter III: Anterior Muscles of the Thigh

The =quadriceps femoris= resembles that of the horse; the =vastus intermedius= is more clearly separable, and consists of two parts. Bursæ occur under the insertions of the internal and external vasti, and often under the end of the biceps in the adult.

FIG. 219.—MUSCLES OF LEFT LEG AND FOOT OF OX, ANTERIOR VIEW.

_a_, Peroneus tertius; _a′_, tibialis anterior; _b_, anterior or long
digital extensor; _b′_, extensor digiti tertii; _c_, peroneus
longus; _d_, extensor digiti quarti; _i_, _i_, annular ligaments;
_k_, external lateral ligament of hock joint; _l_, branch of
suspensory ligament; _20_, patella; _21′_, external condyle of
tibia; _28_, tuberosity of tibia. (After Ellenberger-Baum, Anat. für
Künstler.)
]

FIG. 220.—MUSCLES OF LEG AND FOOT OF OX, EXTERNAL VIEW.

_a_, Peroneus tertius; _a′_, tibialis anterior; _b_, anterior or long
digital extensor; _b′_, tendon of _b_; _c_, peroneus longus; _d_,
extensor digiti quarti; _e_, deep digital flexor; _e′_, tendon of
_e_; _e″_, branch of interosseus medius or suspensory ligament; _f_,
gastrocnemius (the soleus lies just in front of _f_); _f′_, tendon
of _f_; _g_, tendon of superficial digital flexor; _h_, interosseus
medius or suspensory ligament; _i_, _i_, annular ligaments; _20_,
patella; _21′_, external condyle of tibia; _28_, crest of tibia.
(After Ellenberger-Baum, Anat. für Künstler.)
]

The =articularis genu= or subcrureus is a small muscle which lies under the lower part of the vastus intermedius, and is inserted on the suprapatellar cul-de-sac of the synovial membrane.

The =capsularis= is absent.