摘要
为进一步证明长肌纤维组成肌肉为肌桥的神经再生效果，用游离自然变性缝匠肌为肌桥，缝接于２４条狗左肢股神经缺损３ｃｍ处，桥接术后不同时间切取桥接神经缺损部位。常规制成光、电镜切片标本，最后镜下观察和ＬＵＺＥＸ－Ｆ图象分析仪测定。结果：缝匠肌为肌桥的神经再生效果比较理想，术后６个月可有２／３有髓神经纤维抵达靶器官－股四头肌；术后１０个月神经近段和神经远段的有髓神经纤维在数量上无明显差异，几乎均达到靶器官而获得再生成功，只是神经远段的有髓神经纤维密度较大、细的较多，表明再生神经纤维仍在发育成熟之中。这一较理想的神经再生效果，可能由于缝匠肌肌纤维长，桥接在神经缺损之间被两端切断的肌纤维居多，有利于再生纤维通过所致。
In order to confirm the nerve
regenerative effect
of muscle bridge formed by long muscle,we make sartorius into natural degenerative muscular
bridge. When cutting off,the muscular band is sutured to the defect of femoral nerve(about 3 cm)
on the left limb for 24 dogs.During various days after the operation,the defective position of
femoral nerve is cut off. They are respectively made into optical or electrical preparations, then
observed and tested under the light and electrical microscope and Luzex F image analysis
machine. The results are as followings:the regenerative nerve effect of nerve with muscular
bridge formed by sartorius is better. After 6 months of the operation,2/3 of myelinated nerve
fiber arrive the target organ(quatriceps femoris). After 10 months of the operation,there is no
notable defference on qualitity of myelinated nerve fibers between the proximal and distal
segments. But the density of nerve fiber are larger and thiner nerve fiber are more at the distal
segment,which indicate that regenerative nerve fibers are developing. The effect may be
resulted that sartorius fiber is longer and the cut section of both ends of muscle fiber at the
bridged segment are more than others,so as to pass through by regenerative nerve fibers. We
consider that sartorius constituted by long muscle fiber may be the muscular brideg which is
the most suitable to nerve regeneration.
出处
《解剖科学进展》
CAS
1999年第1期52-56,共5页
Progress of Anatomical Sciences
关键词
缝匠肌
肌桥
神经缺损
狗
muscular bridge
nerve defect
sartorius
dog
