[Three-dimensional construction of the relation between the anterior branches of lumbar nerves 4, 5, lumbosacral trunk and sacroiliac joint].
OBJECTIVE
To construct a three-dimensional model to demonstrate the relation between the anterior branches of lumbosacral 4,5, lumbosacral trunk, and the pelvis.


METHODS
An formaldehyde-fixed adult cadaver was dissected to expose the anterior branches of the lumbar nerves 4 and 5, lumbosacral trunk and the sacroiliac. The mixture of titanium powder and adhesive was smeared on the surface of the major branches of L4 and L5 nerves, lumbosacral trunk, femoral nerves and obturator nerves. As soon as the mixture solidified, the specimen was scanned by spiral CT at 3 mm intervals to obtain 159 two-dimensional sectional images for three-dimensional model reconstruction on a personal computer using the software 3-D DOCTOR.


CONCLUSIONS
The reconstructed model can well demonstrate the spatial relation between the nerves and the pelvis, and allows rotation in every direction, which at the same time can be conveniently applied for purpose of clinical teaching.
Zhang
Jing-liao
JL
Department of Orthopedics and Trauma, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. zhangjl@fimmu.com
Gu
Li-qiang
LQ
Wang
Long-jiang
LJ
Xie
Ying-tao
YT
D000328:Adult; D002102:Cadaver; D006801:Humans; D021621:Imaging, Three-Dimensional; D008160:Lumbosacral Plexus / Q000000981:diagnostic imaging*; D008161:Lumbosacral Region / Q000000981:diagnostic imaging; D008297:Male; D010384:Pelvic Bones / Q000000981:diagnostic imaging; D010388:Pelvis / Q000000981:diagnostic imaging; D011859:Radiography; D012446:Sacroiliac Joint / Q000000981:diagnostic imaging*; D013127:Spinal Nerves / Q000000981:diagnostic imaging*