Reliability of measuring sciatic and tibial nerve movement with diagnostic ultrasound during a neural mobilisation technique

Ellis, R, Hing, W, Dilley, A and McNair, P (2008) Reliability of measuring sciatic and tibial nerve movement with diagnostic ultrasound during a neural mobilisation technique. Ultrasound in Medicine & Biology, 34 (8). pp. 1209-1216. ISSN 1879-291X

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Abstract

Diagnostic ultrasound provides a technique whereby real-time, in vivo analysis of peripheral nerve movement is possible. This study measured sciatic nerve movement during a “slider” neural mobilisation technique (ankle dorsiflexion/plantar flexion and cervical extension/flexion). Transverse and longitudinal movement was assessed from still ultrasound images and video sequences by using frame-by-frame cross-correlation software. Sciatic nerve movement was recorded in the transverse and longitudinal planes. For transverse movement, at the posterior midthigh (PMT) the mean value of lateral sciatic nerve movement was 3.54 mm (standard error of measurement [SEM] ± 1.18 mm) compared with anterior-posterior/vertical (AP) movement of 1.61 mm (SEM ± 0.78 mm). At the popliteal crease (PC) scanning location, lateral movement was 6.62 mm (SEM ± 1.10 mm) compared with AP movement of 3.26 mm (SEM ± 0.99 mm). Mean longitudinal sciatic nerve movement at the PMT was 3.47 mm (SEM ± 0.79 mm; n = 27) compared with the PC of 5.22 mm (SEM ± 0.05 mm; n = 3). The reliability of ultrasound measurement of transverse sciatic nerve movement was fair to excellent (Intraclass correlation coefficient [ICC] = 0.39–0.76) compared with excellent (ICC = 0.75) for analysis of longitudinal movement. Diagnostic ultrasound presents a reliable, noninvasive, real-time, in vivo method for analysis of sciatic nerve movement.

Item Type: Article
Keywords: Ultrasound; Sciatic nerve; Neurodynamics; Neural mobilisation; Frame-by-frame cross-correlation; Reliability
Schools and Departments: Brighton and Sussex Medical School > Clinical and Experimental Medicine
Brighton and Sussex Medical School > Division of Medical Education
Subjects: R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry
Depositing User: Ellen Thomas
Date Deposited: 07 Nov 2012 10:33
Last Modified: 25 Sep 2017 09:09
URI: http://sro.sussex.ac.uk/id/eprint/41336
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