Accuracy of Preoperative Ultrasonography for Cubital Tunnel Syndrome: A Comparison with Intraoperative Findings.
10.4055/cios.2018.10.3.352
- Author:
Chul Hyun CHO
1
;
Yong Ho LEE
;
Kwang Soon SONG
;
Kyung Jae LEE
;
Si Wook LEE
;
Sung Moon LEE
Author Information
1. Department of Orthopedic Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea. oscho5362@dsmc.or.kr
- Publication Type:Original Article
- Keywords:
Ulnar nerve;
Cubital tunnel syndrome;
Ultrasonography
- MeSH:
Cubital Tunnel Syndrome*;
Humans;
Prospective Studies;
Ulnar Nerve;
Ultrasonography*
- From:Clinics in Orthopedic Surgery
2018;10(3):352-357
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: The aim of this study was to assess the consistency between preoperative ultrasonographic and intraoperative measurements of the ulnar nerve in patients with cubital tunnel syndrome. METHODS: Twenty-six cases who underwent anterior transposition of the ulnar nerve for cubital tunnel syndrome were enrolled prospectively. On preoperative ultrasonography, largest cross-sectional diameters of the ulnar nerve were measured at the level of medial epicondyle (ME) and 3 cm proximal (PME) and distal (DME) to the ME on the transverse scan by a single experienced radiologist. Intraoperative direct measurements of the largest diameter at the same locations were performed by a single surgeon without knowledge of the preoperative values. The consistency between ultrasonographic and intraoperative values including the largest diameter and swelling ratio were assessed. RESULTS: Significant differences between ultrasonographic and intraoperative values of the largest diameter were found at all levels. The mean difference was 1.29 mm for PME, 1.38 mm for ME, and 1.12 mm for DME. The mean ME-PME swelling ratio for ultrasonographic and intraoperative measurements was 1.50 and 1.39, respectively, showing significant difference. The mean ME-DME swelling ratio for ultrasonographic and intraoperative measurements was 1.53 and 1.43, respectively, showing no significant difference. CONCLUSIONS: Ultrasonographically measured largest diameters of the ulnar nerve at any levels were smaller than the real values determined intraoperatively. The ME-DME swelling ratio of the ulnar nerve measured by ultrasonography was consistent with the intraoperative measurement.
