116 THE 
mal part of the lateral border to the middle of the medial border. 
SKELETON 
OF THE HORSE 
The triangular 
area above the line is occupied by the popliteus muscle, while the area below is 
marked by rough lines (Lineze musculares) to which the deep flexor muscle of the 
Fic. 97.—Rieut Treia AND Fisvuta or Horse; 
ANTERIOR VIEW. 
tuberosity; 3, groove for 
4, medial condyle; 
lateral condyle; 7, 
1, Spine; 2, 
middle patellar ligament; 
5, sulcus muscularis; 6, 
head of fibula; 8, interosseous space; 9, lateral 
surface of tibia; 10, shaft of fibula; 11, imprint 
for attachment of gracilis; 12, crest; 13, promi- 
nence for attachment of semitendinosus; 14, 
medial surface of tibia; 15, medial malleolus; 
16, lateral malleolus. 
tibia (Tuberositas tibix). 
digit is attached; the lines fade out distally, 
where the surface is smooth and flat. The 
nutrient foramen is situated on or near the 
popliteal lime. The anterior border is very 
prominent in its proximal third, forming the 
crest of the tibia (Crista tibixe); distally it is 
reduced to a rough line, which ends at a small 
elevation near the distal end of the bone. The 
medial surface of the crest presents a rough 
prominence for the attachment of the ten- 
don of the semitendinosus. The medial border 
(Margo medialis) is rounded in its proximal 
half, to which the popliteus muscle is attached, 
anda tubercle is found on this part. The dis- 
tal part is a rough line on well-marked bones. 
The lateral border (Crista interossea) is con- 
cave in its proximal part and concurs with the 
fibula in the formation of the interosseous space 
of the leg (Spatium interosseum cruris); a 
smooth impression indicates the course of the 
anterior tibial vessels through the space to the 
front of the leg. About the middle of the bone 
the border divides and incloses a narrow trian- 
gular surface. 
The proximal extremity (Extremitas proxi- 
malis) is large and three-sided. It bears two 
articular eminences, the medial and lateral con- 
dyles (Condylus medialis, lateralis). Each pre- 
sents a somewhat saddle-shaped surface for ar- 
ticulation with the corresponding condyle of the 
femur and meniscus. The spine or intercondy- 
loid eminence (Hminentia intercondyloidea) is 
the central prominence, upon the sides of which 
the articular surfaces are continued; it consists 
of a high medial part and a lower lateral part 
(Tuberculum intercondyloideum mediale, lat- 
erale). On, before, and behind the spine are 
the intercondyloid fosse, in which the anterior 
cruciate ligament and the menisci are attached. 
The condyles are separated behind by the deep 
popliteal notch (Incisura poplitea), on the 
medial side of which there is a tubercle for 
the attachment of the posterior cruciate liga- 
ment. The lateral condyle has an overhang- 
ing outer margin (Margo infraglenoidalis), be- 
low which there is a facet (Facies articularis 
fibularis) for articulation with the fibula. The 
large anterior eminence is the tuberosity of the 
It is marked in front by a groove (Sulcus ligamenti), 
the lower part of which gives attachment to the middle patellar ligament, and 
the groove is flanked by rough areas for the attachment of the medial and lateral 
