Reliability of Ultrasonographic Measurement of Cervical Multifidus Muscle Dimensions during Isometric Contraction of Neck Muscles

Document Type : Original article

Authors

1 MSc in Physiotherapy, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

2 Professor of Physiotherapy, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. (corresponding author)

3 Assistant Professor of Radiology, Faculty of Medicine, Mazandaran University of Medical Sciences. Sari, Iran.

4 MSc in Biostatistics, Faculty of Rehabilitation Sciences, Shahid beheshti University of Medical Sciences, Tehran, Iran

5 Assistant Professor of Physiotherapy, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Abstract

Background and Aim: Cervical multifidus is considered as one of the most important neck stabilizers. Weakness and muscular atrophy of this muscle were seen in patients with chronic neck pain. Ultrasonographic imaging is a non-invasive and feasible technique that commonly used to record such changes and measure muscle dimensions. Therefore, the aim of this study was to evaluate the reliability of ultrasonographic measurement of cervical multifidus muscle’s dimensions during isometric contraction of neck muscles.
Materials and Method: Ten subjects (5 patients with chronic neck pain and 5 healthy subjects) were recruited in this study. Cervical multifidus muscle’s dimensions were measured at the level of forth cervical vertebrae. Ultrasonographic measurement of cervical multifidus muscle at rest, 50% and 100% of maximal voluntary contraction (MVC) were performed by one examiner within 1 week interval. The dimensions of cervical multifidus muscle including cross-sectional area (CSA), anterior posterior dimension (APD), and lateral dimension (LD) were measured. Intraclass correlation coefficients (ICC), standard error of measurement (SEM) and minimal detectable change (MDC) were computed for data analysis.
Results: The between days reliability of maximum strength of neck muscles and multifidus muscle dimensions at rest, 50% and 100% of MVC of neck muscles were good to excellent (ICC=0.75-0.99).
Conclusion: The results of this study showed that ultrasonographic measuring of cervical multifidus muscle’s dimensions during isometric contraction of neck muscles at the level of C4 in females with chronic neck pain and healthy subjects is a reliable and repeatable method.

Keywords

References

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The Scientific Journal of Rehabilitation Medicine
Volume 1, Issue 2 - Serial Number 2
July and August 2012
Pages 36-44

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History

  • Receive Date: 11 July 2011
  • Revise Date: 18 January 2012
  • Accept Date: 15 June 2012
  • First Publish Date: 21 June 2012

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