Human Anatomy Vol 1

Fig.9.27: Pen test for abductor pollicis brevis

Fig. 9.28: Testing first dorsal interosseous muscle of hand

FOREARM AND HAND

Fig.9.31 : Froment's test

over the flexor digiti minimi, the flexor tendons of the

fingers, the lumbricals, and the digital branches of the

median nerve.

Srsm*ftes

Superficial palmar arch gives off three common digital

and one proper digital branches which supply the

medial 31/z fingers. The lateral three common digital

branches are joined by the corresponding palmar

metacarpal arteries from the deep palmar arch.

The deep branch of the ulnar artery arises in front of

the flexor retinaculum immediately beyond the

pisiform bone. Soon it passes between the flexor and

abductor digiti minimi to join and complete the deep

palmar arch.

The radial artery is used for feeling the (arterial) pulse

at the wrist. The pulsations can be felt well in this

situation because of the presence of the flat radius

behind the artery (Fig.9.10).

RADIAT ARTERY

In this part of its course, the radial artery runs obliquely

downwards, and backwards deep to the tendons of the

abductor pollicis longus, the extensor pollicis brevis,

and the extensor pollicis longus, and superficial to the

lateral ligament of the wrist joint. Thus it passes through

the anatomical snuffbox to reach the proximal end of the

first interosseous space (Fig. 9.33). Further, it passes

between the two heads of the first dorsal interosseous

muscle and between the two heads of adductor pollicis

to form the deep palmar arch in the palm.

.ct

E

5

oCL

CL

=

co

-E

oo)

o

Fig. 9.29: Test for palmar interossei

Fig. 9.30: Testing adductor pollicis