Chinese Journal of Clinical Anatomy >
Applied anatomy of contralateral lumbosacral nerve roots transfer to repair lower extremity motor function in hemiplegic stoke
Received date: 2014-04-02
Online published: 2014-12-04
Objective Observe the anatomic structure of intraspinal anterior and posterior lumbosacral roots to provide anatomic basis for clinical application of normal lumbosacral nerve roots transferring in lower extremity motor functionrestoration in hemiplegic stoke. Methods Posterior lumbosacral midline incisions were made on both sides of 6 adult cadaveric specimens; conus medullaris and cauda equine were exposed; the length of L2~S1 spinal nerve roots and diameter of anterior roots were measured; the amount of myelinated nerve fibers was counted under a high-powered microscope, and anterior nerve roots transferring was simulated. Results The length of L2~S1 spinal nerve anterior roots gradually increased from top- down in spinal canal, being (7.57±0.82), (9.12±1.04), (11.56±1.27), (12.75±1.33) and (13.87±1.56) cm, respectively. The diameter was (1.10±0.10), (1.32±0.16), (1.24±0.12), (1.42±0.14) and (1.52±0.21) mm. The amount of myelinated nerve fibers was (8051±898), (10253±1035), (8684±1168), (9638±1446) and (9347±1322). The same or adjacent segments of bilateral anterior nerve roots could be directly anastomosed without tension in the simulated transferring on the cadaveric specimens. Conclusion Contralateral L2~S1 spinal nerve anterior roots can be used as new donor nerves to repair lower extremity motor function in hemiplegic stoke.
Key words： Nerve transfer; Anastomosis; Spinal nerve roots; Stroke; Hemiparalysis
CHEN Hui-Gao , HOU Chun-Lin , LEI De-Qiao , YIN Gang , LIN Gao-Dong . Applied anatomy of contralateral lumbosacral nerve roots transfer to repair lower extremity motor function in hemiplegic stoke[J]. Chinese Journal of Clinical Anatomy, 2014 , 32(6) : 640 -643 . DOI: 10.13418/j.issn.1001-165x.2014
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