Hirsch B E, Vekkos L E
Anat Anz. 1984;155(1-5):123-9.
Anomalous muscles were found in the third layer of plantar musculature in 2 human feet. Although they occupied the approximate position of m. adductor hallucis caput obliquum , they were larger than that muscle and showed more extensive insertions. In one specimen the muscle inserted into the areas of the metatarsophalangeal joint capsules of the first and second toes. In the second specimen the insertion was into the metatarsophalangeal joint capsules of the 4 medial toes. The m. adductor hallucis caput transversum was missing in both feet. Both muscles were supplied by ramus profundus n. plantaris lateralis. The location and innervation of these unusual muscles indicates that they are contrahentes .
在2例人足的足底肌肉第三层中发现了异常肌肉。尽管它们占据了拇收肌斜头的大致位置，但比该肌肉更大，且附着范围更广。在1个标本中，该肌肉附着于第一和第二趾的跖趾关节囊区域。在第二个标本中，附着于4个内侧趾的跖趾关节囊。双足均未发现拇收肌横头。这两块肌肉均由足底外侧神经深支支配。这些异常肌肉的位置和神经支配表明它们是收缩肌。
