3 Anatomical Orientation
Olecranon (Figs 3.55, 3.56)
The olecranon forms the tip of the elbow. Located in the ulnar
sulcus, between the medial epicondyle and the tip of the olecra-
non, is S.I.-8, while T.B.-10is located in a depression
proximal to the olecranon.
3.3.3 Forearm and Hand
For locating points on the forearm, it is important to note whether
the arm is in a pronated or supinated position, since this can have
a considerable effect on the relative location of some points (see
also location details of specific points). For example, in supination
the line connecting L.I.-5and L.I.-11runs along the lateral
border of the forearm, while in pronation it traverses the forearm.
T.B.-10
Olecranon
S.I.-8
Lateral
epicondyle of
the humerus
Medial epicondyle
of the humerus
Brachialis
Brachioradialis
Extensor
carpi radialis
longus
Lateral
epicondyle
Extensor
digitorum
Triceps brachii,
medial head
Tendon of the
triceps brachii
Olecranon
Flexor carpi
ulnaris
Extensor carpi
ulnaris
Triceps brachii,
lateral head
L.I.-11
T.B.-10
Fig. 3.55
Fig. 3.56