Yoshida Y
Department of Anatomy, Kanazawa Medical University, Ishikawa, Japan.
Okajimas Folia Anat Jpn. 1990 Mar;66(6):339-53. doi: 10.2535/ofaj1936.66.6_339.
An anatomical study on the extensor digitorum profundus muscle was made using 832 upper limbs from 416 Japanese adults. The separate muscles derived from the extensor digitorum profundus consist of 10 kinds: namely, the extensor pollicis longus, extensor pollicis et indicis accessorius, extensor indicis radialis, extensor indicis proprius, extensor indicis ulnaris, extensor indicis et medii accessorius, extensor medii proprius, extensor annularis proprius, extensor carpi profundus and extensor digiti brevis. The configuration of the muscles (except for the extensor digiti brevis) in the upper limb was classified into 13 types according to their arrangement and insertion. The most frequent type involved coexistence of the extensor pollicis longus and the extensor indicis proprius: it was observed in 664 limbs (79.8%). The next type involved coexistence of the extensor pollicis longus, extensor indicis proprius and the extensor medii proprius: it was observed in 67 limbs (8.1%). It appears that the extensor digiti brevis of man is derived from the most ulnar part of the extensor digitorum profundus which does not migrate proximally.
利用416名日本成年人的832条上肢对指深伸肌进行了一项解剖学研究。由指深伸肌分出的独立肌肉有10种：即拇长伸肌、拇示指副伸肌、桡侧示指伸肌、固有示指伸肌、尺侧示指伸肌、示指和中指副伸肌、固有中指伸肌、固有环指伸肌、腕骨深伸肌和指短伸肌。上肢肌肉（指短伸肌除外）的形态根据其排列和附着情况分为13种类型。最常见的类型是拇长伸肌和固有示指伸肌并存：在664条上肢中观察到（79.8%）。其次是拇长伸肌、固有示指伸肌和固有中指伸肌并存：在67条上肢中观察到（8.1%）。人类的指短伸肌似乎来自指深伸肌最尺侧的部分，且该部分不会向近端迁移。
