Tillmann B, Gretenkord K
Morphol Med. 1981 Feb;1(1):61-9.
In 111 adults, 3 children and 12 infants the position of the N. medianus and its course through the forearm and the carpal tunnel are examined. In 10% of the adults, deviations from the normal position occur. In 5% of the cases, the nerve does not run radially, but between the tendons for the third and fourth fingers of the M. flexor digitorum superficialis through the carpal tunnel. In another 5% of the cases, the median nerve does not pass superficially but deep beneath the flexor tendons of the fingers, either radially or in the middle of the carpal tunnel, so that he cannot be seen after cutting the transverse ligament (flexor retinaculum). Before disappearing deep between the tendons, the nerve crosses over them. The same observations can be made in infants. The significance of the medial and deep position of the nerve within the carpal tunnel as well as its crossing over the tendons in its course through the forearm is discussed with respect to surgical procedures for opening the carpal tunnel.
对111名成年人、3名儿童和12名婴儿的正中神经位置及其在前臂和腕管中的走行进行了检查。10%的成年人出现与正常位置的偏差。在5%的病例中，神经不是径向走行，而是通过腕管在指浅屈肌第三和第四指的肌腱之间走行。在另外5%的病例中，正中神经不是浅表通过，而是在手指屈肌腱的深部走行，无论是径向还是在腕管中部，因此在切断横韧带（屈肌支持带）后无法看到该神经。在神经深入肌腱之间消失之前，它会从肌腱上跨过。在婴儿中也有同样的观察结果。就打开腕管的手术操作而言，讨论了神经在腕管内的内侧和深部位置及其在前臂走行过程中跨过肌腱的意义。
