动脉分支在330侧标本中，分析了肱深动脉和上尺副动脉的起源状况，以两支动脉分别单独起始的最多占47.88%。

Arterial branches: the brachial profundal artery and the superior ulnar col-lateral artery originate directly from the axillary or brachial artery in 47.88% of 330sides.

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前臂外侧皮神经、桡神经浅支、尺神经腕背支也发支支配腕关节背侧。

It was also innervated by forearm lateral cutaneous nerve, superficial branch of radial nerve, wrist dorsal branch of ulnar nerve.

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小指尺侧无指固有神经背侧支。

The ulnar dorsal branch of the little finger was absent.

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