Shoulder joint anatomy and muscle attachments

1. The Shoulder
Joint
BY: YASIR REHMAN
DPT 4TH YEAR
ROLL NO. 02

2. Content
• Introduction
• Glenoid Cavity
• Ligaments Surrounding the joint
• Bursae in Relation to the Shoulder Joint
• Muscles Acting on Shoulder Joint
• Joint Movements

3. Overview

4. Introduction
• Ball-and-Socket joint
• Bones Involve
o Large globular head of
humerus
o Glenoid cavity of scapul
• Ligaments around gleno-humeral
joint;
o Capsular
o Coracohumeral
o T
ransverse Humeral
o Glenoid Ligament

5. Glenoid Cavity
• Pear Shape
• Shallow
• Directed Laterally and
Upward
• Only1/3rd of the humeral
head comes in contact
with the glenoid cavity at
any position.

6. ARTICULATING
SURFACE

8. Glenohumeral Ligaments
capsular ligaments
coraco-humeral ligament
transverse humeral ligament

10. BURSAE IN RELATION TO THE SHOULDER
JOINT
1) SUBSCAPULAR
BURSA
2) INFRASPINATUS
BURSA
3) SUBACROMIAL
BURSA
(SUBDELTOID)
4) SUBCORACOID
BURSA

12. Muscles in Relation to the
Joint
• Above  Supraspinatus
• Below  Long head of
Triceps
• Front  Subscapularis
• Behind  I
nfraspinatus and
T
eres Minor
• Deltoid isplaced most
externally and covers the
articulation from its outer
side, as well as in front and
behind.

13. Summary on Should Joint
Anatomy

15. • Osteokinematics
o Flexion
o Extension
o Hyperextension
o Abduction
o Adduction
o Medial rotation (internal rotation)
o Lateral rotation (external rotation)
o Horizontal abduction
o Horizontal adduction
o Circumduction

16. Flexion Extension

17. Abduction Adduction

18. Internal and External Rotation

19. Circumduction
• A combination of flexion, abduction, extension,
and adduction or in the reversed sequence
o glenohumeral flexion  abduction  extension  adduction
o glenohumeral extension  abduction  flexion  adduction