[The anatomic features of supratrochlear artery].
OBJECTIVE
To explore the anatomical features of supratrochlear artery which is related to the blood supply of paramedian frontal flap in nasal reconstruction.


METHODS
10 adult head specimens (20 sides) were used for observation of the course, layer and anastomosis of the supratrochlear artery. The horizontal line of supraorbital rim and the frontal middle line were used as X and Y axis to locate the position of supratrochlear artery.


RESULTS
Supratrochlear artery is directed medially and upward after it gets out from orbit. Some arteries (9/20) have one sharp bend at the beginning. The frontal muscle penetration point of the artery is (15.2 +/- 2.6) mm above the X axis and (12. 1 +/- 1 .4) nun lateral to the Y axis. The artery goes subcutaneously after muscle penetration point. It goes more superficially and is anastomosed to the supraorbital artery and frontal branches of the superficial temporal artery at the same side, and also the contra-lateral supratrochlear artery.


CONCLUSIONS
The pedicle of the paramedian frontal flap should not be too narrow. The dissection of the pedicle should not be too near to the artery, so as to protect the bend at the beginning. The flap elevation must be performed beneath the frontal muscle, when it is 2-3 cm above the supraorbital rim.
Cai
Xiao-yan
XY
Department of Burn and Plastic Surgery, the First People's Hospital of Shunde , Southern Medical University, Foshan 528300, China.
Li
Zhi-ming
ZM
Xu
Yang-bin
YB
Cheng
Gang
G
Luo
Peng
P
D000328:Adult; D005260:Female; D005546:Forehead / Q000033:anatomy & histology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000033:anatomy & histology*; D013524:Surgical Flaps / Q000098:blood supply; D013699:Temporal Arteries / Q000033:anatomy & histology*; D055815:Young Adult