Kara Betül Asena, Uzmansel Deniz, Beger Orhan
J Am Podiatr Med Assoc. 2020 May 1;110(3). doi: 10.7547/17-132.
We sought to describe the innervation patterns of the foot lumbrical muscles and their morphological properties in human fetuses and to define the communicating branches between the medial (MPN) and lateral (LPN) plantar nerves, which play a part in the innervation of those muscles.
Thirty formalin-fixed fetuses (13 male and 17 female) with a mean ± SD gestational age of 25.5 ± 3.8 weeks (range, 18-36 weeks) from the inventory of the Mersin University Faculty of Medicine Anatomy Department were bilaterally dissected. Innervation patterns of the lumbrical muscles and the communicating branches between the MPN and the LPN were detected and photographed.
No variations were seen in lumbrical muscle numbers. In the 60 feet, the first lumbrical muscle started directly from the flexor digitorum longus tendon in 48 and from the flexor hallucis longus slips in addition to the flexor digitorum longus tendon in 12. Fifty-five feet had the classic innervation pattern of the lumbrical muscles, and five had variations. No communicating branches were seen in 48 feet, whereas 12 had connections.
This study classified innervation patterns of the foot lumbrical muscles and defined two new innervation types. During surgeries on the foot and ankle in neonatal and early childhood terms, awareness of the communicating branches between the MPN and the LPN and innervation of the intrinsic muscles of the foot, such as the lumbrical muscles, might aid in preventing possible complications.
我们试图描述人类胎儿足部蚓状肌的神经支配模式及其形态学特征，并确定足底内侧神经（MPN）和外侧神经（LPN）之间的交通支，这些交通支在这些肌肉的神经支配中起作用。
对梅尔辛大学医学院解剖学系库存的30例福尔马林固定胎儿（13例男性和17例女性）进行双侧解剖，其平均±标准差胎龄为25.5±3.8周（范围18 - 36周）。检测并拍摄蚓状肌的神经支配模式以及MPN和LPN之间的交通支。
蚓状肌数量未见变异。在60只足中，48只足的第一蚓状肌直接起自趾长屈肌腱，12只足的第一蚓状肌除起自趾长屈肌腱外，还起自拇长屈肌的腱束。55只足具有经典的蚓状肌神经支配模式，5只足有变异。48只足未见交通支，12只足有连接。
本研究对足部蚓状肌的神经支配模式进行了分类，并定义了两种新的神经支配类型。在新生儿期和儿童早期进行足踝手术时，了解MPN和LPN之间的交通支以及足部固有肌肉（如蚓状肌）的神经支配，可能有助于预防可能的并发症。
