Crist Jamie, Glazebrook Katrina, McKenzie Gavin
Department of Radiology, Mayo Clinic, 200 1st St SW, Rochester, MN, 55905.
Radiol Case Rep. 2020 Apr 7;15(6):712-715. doi: 10.1016/j.radcr.2020.03.018. eCollection 2020 Jun.
Ultrasound evaluation of the median nerve is commonly performed in patients with suspected carpal tunnel syndrome. Radiologists should be familiar with variant anatomy of the median nerve to assist clinicians in the management of these patients, particularly when surgery is being considered. A 63-year-old female was being evaluated for a ganglion cyst and was incidentally found to have a bifid median nerve with wandering ulnar division which coursed superficial to the third digit flexor digitorum superficialis (FDS) muscle belly. The patient did not have any symptoms of carpal tunnel syndrome so surgery has not been performed; however this case highlights the importance of ultrasound evaluation to avoid potential perioperative complications.
对于疑似腕管综合征的患者，通常会进行正中神经的超声评估。放射科医生应熟悉正中神经的变异解剖结构，以协助临床医生对这些患者进行管理，尤其是在考虑手术时。一名63岁女性因腱鞘囊肿接受评估，偶然发现其正中神经呈双叉状，尺侧分支走行变异，在第三指浅屈肌（FDS）肌腹表面走行。该患者没有腕管综合征的任何症状，因此尚未进行手术；然而，这个病例凸显了超声评估对于避免潜在围手术期并发症的重要性。
