Human Anatomy Vol 1

BONES OF UPPEB LIMB

Radial artery

Styloid process

Head

Radial tuberosity with

rough posterior part and

smooth anterior part

Anterior border

Nutrient foramen

Medial border

Epiphyseal line

Capsular line

Posterior border

Dorsal tubercle

Styloid process

Fig.2.21: Features of right radius: Anterior aspect

Rough area for

pronator teres

(^2) The posterior surface lies between the posterior and
interosseous borders.
3 The lateral surface lies between the anterior and
posterior borders. It shows a roughened area in its
middle part.
d.c flEmd
The lower end is the widest part of the bone. It has
5 surfaces.
1 The anterior surface is in the form of a thick
prominent ridge. Theradial artery is palpated against
this surface (Fig. 2.21).
Epiphyseal line
Capsular line
Oblique groove
lt
tr
=o
e
CL
f
c
o
o
ao
Lateral epicondyle
Medial epicondyle
Olecranon process
Olecranon
process
(a)
Figs 2.19a and b: Relationship of lateral epicondyle,
olecranon process and medial epicondyle in: (a) Flexed elbow,
and (b) extended elbow
Acromion
Normal
position of
humerus
Humerus dislocated
inferiorly
Fig.2.2Ol. lnferior dislocation of humerus
Fig.2.22: Features of right radius: Posterior aspect