The origin structure of each finger in the flexor digitorum superficialis muscle.
Kanta MatsuzawaMutsuaki EdamaMasahiro IkezuFumiya KanekoRyo HirabayashiIkuo KageyamaPublished in: Surgical and radiologic anatomy : SRA (2020)
Because the second and fifth digits or an independent fifth digit originated from the AOL, their contraction may cause tension in the AOL.
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