This document discusses the anatomy of the scapular region. It lists the surface landmarks and cutaneous nerves. It describes the three layers of posterior axio-appendicular muscles - superficial, intermediate, and deep layers. It also discusses the scapulohumeral muscles including the deltoid, supraspinatus, infraspinatus, teres minor, teres major, and subscapularis. The rotator cuff muscles and movements of the scapula are mentioned. It provides details on the trapezius and latissimus dorsi muscles, including their origins, insertions and actions.

1. Surface landmarks
Cutaneous nerves
Posterior axio-appendicular muscles (muscles attaching scapula with vertebral column)
Superficial layer- Trapezius & Latissimus dorsi
Intermediate layer- Serratus posterior superior and Serratus posterior inferior
Deep layer- Levator scapulae, Rhomboideus major, Rhomboideus minor
SCAPULAR REGION
scapulohumeral (muscles attaching scapula with humerus)
Deltoid
Suprespinatus
Infraspinatus
Teres minor
Teres major
Subscapularis
Rotator cuff muscles
Movements of scapula
Subscapular spaces
Nerves and blood vessels

2. Bony landmarks

3. Cutaneous nerves

5. Posterior axio-appendicular muscles
(muscles attaching scapula with vertebral column)
TRAPEZIUS

6. PARTS ORIGIN DIRECTION INSERTION
Upper/
descen
ding
fibers-
medial third of superior
nuchal line
external occipital
protuberance
ligamentum nuchae
spinous processes of C7
downward
and laterally
posterior border of
the lateral third of
clavicle.
middle
fibers/
transv
erse
spinous process of the
seventh cervical
spinous processes of
T1–T3 vertebrae
horizontally medial margin of
acromion, and into
the superior lip of
the crest spine of the
scapula.
Lower/
ascend
ing
fibers
the spinous processes
of T4–T12 vertebra
upward and
laterally
Deltoid tubercle at
the junction of
medial and middle
third of spine of
scapula
TRAPEZIUS

7. LATISSIMUS DORSI

8. LATISSIMUS DORSI
• Origin-lower six thoracic nerve anterior to
trapezius
• Posterior lamina of thoracolumbar fascia
• Outer lip of posterior part of iliac crest
• Lower four ribs
• Inferior angle of scapula
• Insertion- floor of bicipital groove
• Nerve supply- thoracodorsal nerve
• Action- adduction, extension, medial rotation
• Pulls trunk upward and forward during climbing in
conjuction with PM
• Helps in violentary expiratory effort

9. LEVATOR SCAPULAE, RHOMBOIDEUS

12. DELTOID

13. DELTOID

14. Scapulohumeral muscles

15. Scapulohumeral muscles

19. Intermuscular spaces

20. AXILLARY NERVE