The spine of the scapula is the insertion for:
1. the middle portion of the trapezius (superior border of the
spine of the scapula),
2. the inferior portion of the trapezius (medial third of the
spine of the scapula).
The spine of the scapula is the origin for:
1. the posterior portion of the deltoid (inferior margin of
the spine of the scapula).
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2005 by William Johnson II
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