Greater Tubercle of Humerus
The structure indicated is the
greater tubercle of the humerus.
The greater tubercle lies lateral to the
head of the humerus as serves as the point of attachment for three of the
rotator cuff muscles. There are three flat facets to which these three muscles attach:
- Superior facet
- Middle facet
- Inferior facet
The
supraspinatus attaches to the
superior facet.
The
infraspinatus attaches to the
middle facet.
The
teres minor attaches to the
inferior facet.
Separating the greater tubercle from the lesser tubercle is the
intertubercular sulcus, also known as the
bicipital groove. The long head of the biceps runs in this groove to attach to the
supraglenoid tubercle.
Learn more about the anatomy of the
humerus in this anatomy tutorial.
