Page 63 - ASOP ROT Study Guide

http://morphopedics.wikidot.com/reverse-total-shoulder-replacement

9 . 2 Stability
The egg on a spoon analogy suggests that the shoulder joint is not very stable as far as its bony
shape goes and indeed in the shoulder joint, stability has been sacrificed for the sake of increased
mobility. Dislocations of the shoulder are therefore not infrequent.
However, three structures do contribute to stability of the joint:
♦ the glenoid labrum
♦ the coraco-acromial ligament
♦ the rotator cuff
The glenoid labrum is a cartilaginous rim around the glenoid fossa of the scapula which helps to
contain the head of the humerus.
The coraco-acromial ligament is a strong arc of tissue between the acromion process and the
coracoid process of the scapula

http://www.shoulderdoconline.co.uk/arti
cle.asp?article=1179

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