Effect of intraneural decompression to peripheral nerve estimated by intraoperative nerve blood flow

周围神经内部有丰富的血管。当周围神经受到压迫时，血管分布减少。周围神经血管造影是困难的常规影像学检查。在这项研究中，我们成功地利用吲哚菁绿荧光血管造影评估周围神经的血管性。在神经受压部位行外神经切开术后，周围神经的血管性明显改善，特别是当压迫性神经病变严重时。压迫性神经病变的严重程度导致神经外膜纤维化，压迫神经本身。我们的研究结果表明，在治疗严重的压迫性神经病时，神经切开术可以降低神经本身的压力。

The peripheral nerve has abundant vascularity inside. The vascularity decreases when the peripheral nerve is compressed. Angiography of the peripheral nerve was difficult by conventional imaging examinations. In this study, we succeeded in evaluating the vascularity of the peripheral nerve by use of indocyanine green fluorescence angiography.The vascularity of the peripheral nerve was significantly improved by epineurotomy at the site of compression to the nerve, especially when the entrapment neuropathy was severe. The severity of the entrapment neuropathy causes fibrosis of the epineurium compressing the nerve itself. Our results suggested that epineurotomy decrease the pressure of nerve itself in case of treatment of severe entrapment neuropathy.