Surgical neck of the humerus
|Surgical neck of the humerus|
Left humerus. Anterior view. (Surgical neck labeled at upper left.)
|Latin||collum chirurgicum humeri|
It is much more frequently fractured than the anatomical neck of the humerus. A fracture in this area is most likely to cause damage to the axillary nerve and posterior circumflex humeral artery. Damage to the axillary nerve affects function of the teres minor and deltoid muscles, resulting in loss of abduction of arm (from 15-90 degrees), weak flexion, extension, and rotation of shoulder as well as loss of sensation of the skin over a small part of the lateral shoulder.
- Anatomy image: skel/humerusup2 at Human Anatomy Lecture (Biology 129), Pennsylvania State University
- "Surgical neck of humerus". Medcyclopaedia. GE. Archived from the original on 2007-06-20.
- radiographsul at The Anatomy Lesson by Wesley Norman (Georgetown University) (xrayleftshoulder)
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