Surgical Neck of Humerus
The structure indicated is the surgical neck
of the humerus.
The proximal end of the humerus consists of the following features:
- Anatomical neck
- Surgical neck
- Greater and lesser tubercles
- Intertubercular sulcus (bicipital groove)
- Deltoid tuberosity
- Superior, middle and inferior facets
The anatomical neck
of the humerus is located distal to the head of the humerus, at an oblique angle to the shaft of the humerus. The surgical neck
of the humerus on the other hand is a constriction of the humerus located inferior to the greater
tubercles. It is a clinically important anatomical feature of the humerus as it is the most frequently fractured
site of the proximal humerus, putting the axillary nerve
and posterior circumflex humeral branch
of the axillary artery at risk.
Learn more about the features of the humerus
in this anatomy tutorial.