Human Anatomy Vol 1

Posterior

Lateral Medial

Serrotus Anterior

Acromial end

Lateral 1/3rd

Attochments

I At the lateral end, the margin of the articular surface
for its acromioclavicular joint gives attachment to the
joint capsulq.

(^2) At the medial end, the margin of the articular surface
for the stemum gives attachment to:
a. Fibrous capsule of sternoclavicular joint all around
(Figs2.2a and b).
b. Articular disc posterosuperiorly.
c. Interclavicular ligament superiorly.
3 Lateral one-third of shaft
a. The anterior border gives origin to the deltoid
(Fig.2.2a).
b. The posterior border provides insertion to the
trapezius.
Trapezius
Lateral end
Sternal end
Medial 2/3rd
(a)
Anterior
Lateral Medial
Posterior
Trapezoid ridge lmpression costoclavicularfor
ligament
Conoid tubercle
Figs 2.1a and b: General features of right clavicle: (a) Superior aspect, and (b) inferior aspect
c. The conoid tubercle and trapezoid ridge give
attachment to the conoidandtrapezoid parts of the
coracoclaaicular ligament (Fig. 2.2b).
4 Medial two-thirds of the shaft
a. Most of the anterior surface gives origin to the
pectoralis major (Figs2.2a andb).
b. Half of the rough superior surface gives origin to
the clavicular head of the sternocleidomastoid
(Fig.2.2a).
c. The oval impression on the inferior surface at the
medial end gives attachment to the costoclaaicular
ligament (Fig.2.2b).
d. The subclavian groove gives insertion to the
subclaztius muscle. The margins of the groove give
attachment to the clavipectoral fascia.
e. The posterior surface close to medial end gives
origin to sternohyoid muscle
Sternocleidomastoid
Medial end
(a) Capsule of
sternoclavicular joint
Subclavius Pectoralismajor
Capsule of
acromioclavicular
joint
Trapezius
.c}
E
=o
eEL
5
c.o
oo)
a
Trapezoid and conoid parts
of coracoclavicular ligamenl
Costoclavicular
ligament
Figs2.2a and b: Attachments of right clavicle: (a) Superior aspect, and (b) inferior aspect