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There is bifurcation of median nerve before distal radio-ulnar joint. It is a normal variant.
Combined Cross sectional area of two branches - 9 mm
Ulnar division - 1 mm
Radial division - 8 mm
( Normal - up to 11 mm )
Persistent median artery is noted flanked by veins on both sides.
Artery shows echogenic wall, non-compressible lumen at wrist and proximal palm.
No flow is noted in this segment.
Both veins are compressible.
No mass lesion is seen. No tenosynovitis is seen.