title: Use of High-Resolution Ultrasonography in Anterior Subcutaneous Transposition of the Ulnar Nerve for Cubital Tunnel Syndrome.
abstract: Cubital tunnel syndrome (CTS) is the most common form of ulnar nerve entrapment. In this study, ultrasonography (US) was used not only for diagnosis but also for operation. US findings could be used to establish the diagnosis of CTS and could demonstrate the pathological anatomy in the cubital tunnel region to guide anterior subcutaneous transposition of the ulnar nerve.
  
  
  
  Sixty-two patients with clinical and electrophysiological evidence of ulnar nerve entrapment were included. All patients received ultrasonographic examination and anterior subcutaneous transposition of the ulnar nerve. The maximal diameter of the ulnar nerve (MDU) was measured in longitudinal views and the range of the hypoechoic area around the nerve was observed. The cross-sectional area (CSA) was also measured on transverse scans. The actual MDU was measured during operation.
  
  
  
  The actual MDU was 6.4 ± 0.4 mm, measured during operation. The preoperative MDU was 3.1 ± 0.2 mm. The MDU values recorded in CTS patients were greater than those in normal subjects. The range of the hypoechoic area observed on longitudinal US scans was 2.9-5.6 mm (mean, 4.1 ± 0.4 mm).
  
  
  
  High-resolution US can be used not only in the diagnosis of CTS, also for providing effective preoperative evaluation for the anterior subcutaneous transposition of the ulnar nerve in CTS.
authors.affiliation: Department of Neurosurgery, Xinhua Hospital of Shanghai Jiaotong University, No 1665, Kongjiang Road, Shanghai, 200092, China.
authors.forename: Min
authors.initials: M
authors.lastname: Yang
authors.affiliation: Department of Neurosurgery, The People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China.
authors.forename: Jichao
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Neurosurgery, Xinhua Hospital of Shanghai Jiaotong University, No 1665, Kongjiang Road, Shanghai, 200092, China.
authors.forename: Xiaosheng
authors.initials: X
authors.lastname: Yang
authors.affiliation: Department of Neurosurgery, Xinhua Hospital of Shanghai Jiaotong University, No 1665, Kongjiang Road, Shanghai, 200092, China.
authors.forename: Wenxiang
authors.initials: W
authors.lastname: Zhong
authors.affiliation: Department of Neurosurgery, Xinhua Hospital of Shanghai Jiaotong University, No 1665, Kongjiang Road, Shanghai, 200092, China.
authors.forename: Qiufeng
authors.initials: Q
authors.lastname: Ma
authors.affiliation: Department of Neurosurgery, Xinhua Hospital of Shanghai Jiaotong University, No 1665, Kongjiang Road, Shanghai, 200092, China.
authors.forename: Shiting
authors.initials: S
authors.lastname: Li
authors.affiliation: Department of Neurosurgery, Xinhua Hospital of Shanghai Jiaotong University, No 1665, Kongjiang Road, Shanghai, 200092, China. zhangwench88@hotmail.com.
authors.forename: Wenchuan
authors.initials: W
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D020430:Cubital Tunnel Syndrome / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019635:Neurosurgical Procedures; D009929:Organ Size; D014459:Ulnar Nerve / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D014463:Ultrasonography
keywords: Anterior subcutaneous transposition; Cubital tunnel syndrome; High-resolution ultrasonography; Ulnar nerve