Shoulder Girdle or Shoulder Complex?

What is the shoulder girdle or shoulder complex? Is there a difference when you use these two different words when it comes to the shoulder?

Shoulder Joint: Anatomy Concise Medical Knowledge

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Two Minutes of Anatomy: Shoulder Joints

Bildergebnis für coracoacromial ligament

Guide to Shoulder Anatomy

Various constituents of the shoulder complex including the scapula

Shoulder Joint Complex - ppt video online download

How to Hold Proper Chaturanga Alignment

ANAT 120 Exam Prep 2 Flashcards

Stability of the Shoulder Complex during Manual Exertions