Anatomical variation of Lateral femoral circumflex artery in Thai people
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Date
2010-03-14
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Royal Thai Airforce Medical Gazette
Abstract
Objective: To investigate anatomical pattern of leteral femoral circumflex artery (LFCA) in Thai people. To find percentage of variation in location, size and length in each pattern. To identify the difference between genders (male \& female) and between 2 sides (left \& right). To suggest precautions for artery surgery in the patient diagnosed as having variation of LFCA. Study design: Descriptive study. Subjective: 15 formalin embalmed cadavers (30 sides) from department of anatomy, faculty of dentistry, Chulalongkorn University. Data collection: Structure and location of LFCA anatomy were investigated from cadavers. Localized anatomy for comparison includes distance from anterior superior iliac spine, length of artery (millimeter), diameter of artery measured by microscope Olympus model CHS (Lamp 6 V, 20 w) x 10 (mm). Statistical comparisons were conducted by using the compare means and pair T- test. Result: From 9 cases in male (60%), 6 cases in female (40%), at average 75 year-old (51-92), there were 5 patterns of LFCA including: Type A Type B Type C Type D Type E 20% (6/30) 40% (12/30) 26.6% (8/30) 6.6% (2/30) 6.6% (2/30) Lateral femoral circumflex artery ended with two terminal branches – the ascending and descending branch. Transverse branch only as the largest branch of the ascending branch. There was one case absent transverse branch. From the whole study cases, there was 20% LFCA originated from femoral artery while 80% originated from deep femoral artery. Length: measurement -Ascending Rt 62.0 (45.0-80.0) mm/ Lt 61.8 (40.0-78.0) mm. Transverse Rt 52.4 (45.0-80.0) mm /Lt 52.0 (46.0-75.0) mm. Descending Rt 130.0 (80.0-120.0) mm/Lt 132.0 (84.0-132.0) mm. Diameter: -Ascending Rt 1.38 (1.10-1.80) mm/Lt 1.43 (1.10-1.90) mm. Transverse Rt 1.30 (1.20-1.80) mm/Lt 1.26 (1.10-1.70) mm. Distance: from ASIS to ascending branch was 81.2 mm, from ASIS to transverse branch was 103.0 mm. There was no significant difference in type, length and diameter between male and female and no significant difference in length and diameter between right and left (95% CI). Results from the study can be used for assessment and localization of the LFCA for free vascularized fibular bone graft (FVFBG) surgery. One dissection that the transverse branch of LFCA was absent suggested an awareness of these variations, which could help avoiding unexpected injuries.
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Royal Thai Airforce Medical Gazette; Vol.54 No.2 May-August 2008; 11