背景:腓骨肌(PT)是一个独立的实体一直存在争议。据报道,PT是指长伸肌的一部分,指短伸肌的一部分,或单独的肌肉。虽然猪和灵长类动物一样有PT,目前尚无与指长伸肌或指短伸肌相关的报道.
方法:在本研究中,我们用大体解剖和Sihler染色来确定起源,当然,插入,和猪PT的神经支配。
结果:PT和趾长伸肌共同起源于股骨,并在颅骨和腓骨之间运行。PT插入在跖骨伸肌的支持带,睑骨,和第二跖骨。腓总神经到指长伸肌的分支分布到PT。
结论:神经支配表明,猪的PT和趾长伸肌在发育过程中来自相同的肌肉质量,但由于其形态差异而分别命名。此外,形态学特征表明猪PT和人PT可能是不同的肌肉。
BACKGROUND: That the peroneus tertius muscle (PT) is a separate entity has been debated. PT has been reported to be part of the extensor digitorum longus muscle, part of the extensor digitorum brevis, or a separate muscle. While pigs have a PT as well as primates, there are no reports of its association with the extensor digitorum longus muscle or extensor digitorum brevis.
METHODS: In this study, we used gross dissection and Sihler\'s staining to determine the origin, course, insertion, and innervation of the pig PT.
RESULTS: The PT and extensor digitorum longus muscles jointly originated from the femur and ran between the tibialis cranialis and peroneus longus muscles. The PT was inserted at the retinaculum of the metatarsal extensors, tarsal bone, and second metatarsal bone. The branches of the common fibular nerve to the extensor digitorum longus muscle were distributed to the PT.
CONCLUSIONS: The innervations suggest that the PT and extensor digitorum longus muscles of the pig were derived from the same muscle mass during development but were named separately due to differences in their morphology. Furthermore, morphological features suggest that pig PT and human PT are probably different muscles.