DETAILED ANATOMY OF LIMB MUSCLES 
55 
Muscles of the forearm and hand, flexor group 
Name of muscle 
Origin 
Insertion 
32. Flexor carpi ulnaris. 
Medial face of olecranon and 
medial epicondyle of hu¬ 
merus. 
Pisiform. 
33. Pronator teres. 
Medial epicondyle of hu¬ 
merus. 
Middle of medial side of 
shaft of radius. 
34. Flexor carpi radialis. 
Medial epicondyle of hu¬ 
merus, adjacent to origin of 
pronator teres (33). 
Proximal end of second 
metacarpal. 
35 - Palmaris. 
Medial epicondyle of hu¬ 
merus in association with 
the superficial head of the 
flexor digitorum profundus 
( 37 ). 
Lost in palmar fascia, or 
sheet of connective tissue 
covering ventral surface of 
manus, sending off a small 
slip which is inserted into 
distal phalanx of pollex. 
36. Flexor digitorum sublimis 
(perforatus). 
Medial epicondyle of hu¬ 
merus between the flexor 
carpi ulnaris and the super¬ 
ficial head of the flexor 
digitorum profundus (37). 
Divides into four tendons 
which are superficial to the 
tendon of flexor digitorum 
profundus, and pass to the 
manus and ventral faces of 
the second to fifth digits, 
where each tendon divides 
at base of proximal phalanx 
into two slips which pass 
one on either side of 
phalanx to be inserted into 
proximal end of middle 
phalanx. 
37. Flexor digitorum profundus 
(perforans) made up by 
union of four heads: 
(a) Superficial head. 
Medial epicondyle of hu¬ 
merus. 
Its tendon spreads out into 
a broad stout sheath lying 
immediately dorsal to the 
tendon of the flexor digi¬ 
torum sublimis (36); from 
this sheath five tendons are 
given off, one to each digit, 
each passing along the 
ventral face of the digit to be 
inserted into its distal 
phalanx; in the second to 
fifth digits the tendons pass 
between the two slips into 
which the corresponding 
tendon of the flexor digi¬ 
torum sublimis is divided. 
( b) Middle head. 
Medial epicondyle of hu¬ 
merus. 
(c) Radial head. 
Proximal part of flexor sur¬ 
face of the radius. 
(d) Ulnar head. 
Flexor surface of ulna. 
B. THE POSTERIOR LIMB MUSCLES. 
Muscles of the lumbar region 
(The muscles of this group lie in the dorsal wall of the abdominal cavity and for the most 
part pass beneath the inguinal ligament to reach their insertion into the appendicular skeleton. 
This ligament, which stretches from the anterior spine of the crest of the ilium to the tubercle 
of the pubis, serves not only as the insertion of portions of the abdominal muscles but also as the 
origin of the sartorius muscle (14), and it is therefore advisable to postpone the dissection 
and identification of the lumbar group of appendicular muscles until after the muscles of the 
medial surface of the thigh have been studied.) 
