3.3 Shoulder and Arm
Styloid process of the radius
(Figs 3.57, 3.58)
The styloid process forms a flat mound on the anterior and lat-
eral aspect of the distal end of the radius. An oblique groove can
be palpated at the transition from the process to the shaft of the
radius. This is the location of LU-7. LU-8is located
slightly more distally and anteriorly, at the border of the process.
Styloid process of the ulna
(Figs 3.57, 3.58)
The styloid process of the ulna is located at the distal end of the
ulna, forming a distinct prominence. With the elbow flexed and
the forearm in a supinated position, a small groove becomes pal-
pable (sliding groove of the tendon of the extensor carpi ulnaris
muscle). This is the location of S.I.-6.
Radius
Styloid process
of the radius
Scaphoid
Ulna
Styloid process
of the ulna
Triquetrum
Hamatum
Distal
radioulnar
joint
Styloid
process
of the ulna
Pisiform
Radius
Styloid process
of the radius
Lunate
Ulna
Fig. 3.57 Wrist joint, posterior view
Fig. 3.58 Wrist joint, anterior view
Abductor pollicis
longus
Brachioradialis
1,5 cun
Wrist joint
space
S.I.-6 Styloid process
of the ulna
Wrist joint space
Radial
artery
LU-9
Carpal bones
Abductor
pollicis longus
LU-8
1 cun
Fig. 3.59