单侧小指展肌变异1例
Chinese Journal of Clinical Anatomy(2019)
Abstract
笔者在局部解剖学尸体解剖过程中发现成年男性右上肢单侧小指展肌变异1例.查阅文献,国内最早1例报道在1996年[1],近十年未见相同变异报道,为丰富国人解剖学资料,报道如下:
变异肌位于右侧,小指展肌经腕横韧带浅面向近侧越过腕部,肌腹向上延续至前臂尺侧的浅层,左前臂未见相同变异(图1).该肌位于掌长肌肌腱与尺侧腕屈肌之间,指浅屈肌尺侧半的浅面.肌肉呈扁梭形,纤维纵行,肌腹长8.0 cm,宽2.5 cm,厚0.4 cm.以往文献报道该肌起于前臂深筋膜,本例标本肌腹前臂部向近侧以一细长肌腱连于尺侧腕屈肌的桡侧,肌腱长11.2 cm.
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