Abstract
A very rare developmental anomaly showing bilaterally persistent sciatic arteries was found in a cadaver of 89 year old female. Both right and left sciatic arteries arose from the internal iliac arteries and appeared between the piriformis and superior gemellus muscles at the buttock, being about 10 mm in diameter. Each artery, which accompanied by the companion vein, i.e. sciatic vein, sent the branches to the gluteus maximus and the flexor muscles of thigh. On the other hand, the femoral arteries of both lower limbs were smaller than usual, measuring 4.7 mm in left and 5.2 mm in right. The terminal vessels of those were joined to the sciatic arteries at the popliteal fossa. In addition, the present case also had another developmental anomaly, i.e. superficial brachial artery in the right upper limb.
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