218 OSTEOLOGY: 
wards and inwards. 
This constitutes the upper part of the spiral line (linea inter- 
trochanterica), and serves for the attachment of the ilio-femoral ligament of the 
> oO 
Heap—— DIGITAL FOSSA 
Fossa FOR LIG. TERES——, ; 
Gluteus 
medius 
GREAT 
TROCHANTER 
Tubercle of 
NECK~ quadratus 
INTERTRO- 
. i, 
SMALL TROCHANTER— +S 
Psoas magnus / 
Hliacus—_ 
PECTINEAL LINE—— 
Pectineus——— —GLUTEAL RIDGE 
1 me re F 
SPIRAL LINE— Gluteus maximus 
Waductorabravis ARTERIAL FORAMEN 
— Vastus externus 
Vastus internus 
Adductor magnus 
LINEA ASPERA 
_—— Crureus 
Adductor longus 
ARTERIAL FORAMEN-—-—3f 
___—- Short head of biceps 
= —— Ext. EPICONDYLIC LINE 
INT. EPICONDYLIC LINE | 
Adductor magnus ——POPLITEAL SURFACE 
De ane 
ADDUCTOR ___— Plantaris 
TUBERCLE 
Gastroc- 
nemius— Gastrocnemius 
‘> 
INTERNAL. 
TUBEROSITY EXTERNAL TUBEROSITY 
—Surface for attachment of 
ant. crucial ligament 
INTERNAL 
CONDYLE 
Surface for 
attachment” 
of posterior 
crucial ligament 
) EXTERNAL CONDYLE 
INTERCONDYLIC NOTCH 
Fia. 161.—RicHt FEMUR AS SEEN FROM BEHIND. 
CHANTERIC RIDGE 
Quadratus femoris 
hip-joint. Posteriorly, where 
the neck unites with the 
shaft, there isa full rounded 
ridge passing from the tro- 
chanter major above to the 
trochanter minor below; 
this is the posterior inter- 
trochanteric line or ridge 
(crista intertrochanterica). 
A little above the middle 
of this ridge there is usually 
a fulness which serves to 
indicate the upper limit of 
attachment of the quadratus 
femoris muscle, and is called 
the tubercle for the quad- 
ratus. Externally the neck 
is embedded in the inner 
surface of the trochanter 
major, by which, at its upper 
and back part, it 1s to some 
extent overhung. Here is 
situated the digital fossa 
(fossa trochanterica), ito 
which the tendon of the 
obturator externus is in- 
serted. Passing nearly hori- 
zontally across the back of 
the neck there is a faint 
groove leading into this 
depression; in this the 
tendon of the obturator 
externus muscle les. In- 
feriorly the neck becomes 
confluent with the tro- 
chanter minor behind, and 
is continuous with the inner 
surface of the shaft in front. 
The neck is pierced by many 
vascular canals, most numer- 
ous at the upper and back 
part. Some are directed 
upwards towards the head, 
whilst others pass in the 
direction of the trochanter 
major. 
The trochanter major 
is a large quadrangular 
process which caps the upper 
and outer part of the shaft, 
and overhangs the root of 
the neck above and behind. 
Its outer surface, of rounded 
irregular form, slopes up- 
wards and inwards, and is 
separated from the external surface of the shaft below by a more or less hori- 
zontal ridge. Crossing it obliquely from the posterior superior to the anterior 
j 
