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A 48-year-old woman presented with a claw hand following injury to the ulnar nerve during ganglion cyst removal from Guyon canal. A 48-year-old woman presented.

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Presentation on theme: "A 48-year-old woman presented with a claw hand following injury to the ulnar nerve during ganglion cyst removal from Guyon canal. A 48-year-old woman presented."— Presentation transcript:

1 A 48-year-old woman presented with a claw hand following injury to the ulnar nerve during ganglion cyst removal from Guyon canal. A 48-year-old woman presented with a claw hand following injury to the ulnar nerve during ganglion cyst removal from Guyon canal. A and B, During repeat surgery, the severed nerve is sutured to the ends of a neurotube (arrows). C−E, MRN examination was performed 1 month after the surgery. Axial T2 SPAIR image (C) shows an enlarged and hyperintense ulnar nerve proximally related to long-standing obstruction of axoplasmic flow (curved arrow) and postoperative changes. At the level of the hook of the hamate, minimal filling of the neural tube with nonenhancing tissue (arrowhead on the axial T2 SPAIR image in D, and wavy arrow in the postcontrast 3D T1 fat-saturated image in E) is hypothesized to represent early nerve sprouts. A. Chhabra et al. AJNR Am J Neuroradiol 2010;31: ©2010 by American Society of Neuroradiology

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