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Ultrasound measurement of the acromioclavicular joint
  1. A P Rozin
  1. B Shine Department of Rheumatology, Rambam Health Care Campus and Technion, Haifa, Israel
  1. Dr A Rozin, Department of Rheumatology, Rambam Health Care Campus, POB 9602, Haifa 31096, Israel; a_rozin{at}

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The acromioclavicular joint (ACJ) is a widely used, versatile and complex gliding synovial joint that provides stability and increases function; the ability to raise the arm above the head with a greater degree of arm rotation. The ACJ is vulnerable to trauma, instability, dislocation, osteoarthritis and synovitis.1 The ACJ is assessed for dislocation, fluid collection, cysts and bone erosions,2 3 but measurement of normal ACJ parameters is still unclear. That makes it difficult to interpret ACJ pathology.4 Ultrasound (US) enables direct imaging of the ACJ and has been proven to be as accurate as x ray assessment.4

The aim of the present study was to obtain US dimensions of the ACJ in healthy volunteers. US assessment (SonoSite Titan with 5–10 MHz L38 linear …

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  • Competing interests: None declared.

  • Ethics approval: Ethics approval was obtained.

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