Ultrasound in Medicine and Biology
Volume 28, Issue 4 , Pages 407-414, April 2002

Reliability of sacroiliac joint laxity measurement with Doppler imaging of vibrations

  • Lé Damen

      Affiliations

    • Corresponding Author InformationAddress correspondence to: Léonie Damen, M.Sc., Institute of Rehabilitation Medicine, Erasmus University Rotterdam, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
    • Departments of Biomedical Physics and Technology, Erasmus University Rotterdam, Rotterdam, The Netherlands; and Department of
    • Institute of Rehabilitation Medicine, Erasmus University Rotterdam, Rotterdam, The Netherlands
    • ,
  • Theo Stijnen

      Affiliations

    • Epidemiology and Biostatistics,Erasmus University Rotterdam, Rotterdam, The Netherlands
    • ,
  • Marij E. Roebroeck

      Affiliations

    • Institute of Rehabilitation Medicine, Erasmus University Rotterdam, Rotterdam, The Netherlands
    • ,
  • Chris J. Snijders

      Affiliations

    • Departments of Biomedical Physics and Technology, Erasmus University Rotterdam, Rotterdam, The Netherlands; and Department of
    • ,
  • Hendrik J. Stam

      Affiliations

    • Institute of Rehabilitation Medicine, Erasmus University Rotterdam, Rotterdam, The Netherlands

Received 6 August 2001; accepted 31 January 2002.

Abstract 

We developed a noninvasive technique, referred to as Doppler imaging of vibrations (DIV), to measure laxity of the sacroiliac joint (SIJ). The purpose of this study was to examine the reliability of SIJ laxity measurements. A total of 10 healthy women (mean 29.6 ± 6 years old) participated in the study. At both sides, SIJ laxity was measured with DIV in threshold units (TU). Reliability and measurement error were assessed from repeated measurements by five testers on two occasions as well as by one experienced tester. Intraclass correlation coefficients ranged from 0.53 to 0.80 for all five testers, and from 0.75 to 0.89 for the one experienced tester. Only changes larger than 1.94 to 3.60 TU (any tester) or 1.45 to 2.38 TU (experienced tester) could be confidently detected. DIV is a reliable technique for SIJ laxity measurements in healthy subjects, when performed by an experienced tester. (E-mail: leoniedamen@hotmail.com)

Keywords:  Sacroiliac joint, Doppler, Pelvic pain, Reliability, Generalisability theory

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PII: S0301-5629(02)00491-X

Ultrasound in Medicine and Biology
Volume 28, Issue 4 , Pages 407-414, April 2002

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