Background: The cervicothoracic junction (CTJ) is often inadequately visualized on lateral cervical X-rays due to anatomic variations and technical factors.
Aims: The aim of this study was to investigate whether the swimmer's view and arm traction could enhance the image field on the standard lateral cervical (SLC) X-ray.
Methods: The study was conducted in a university hospital in October 2007 with 40 volunteers. SLC X-ray, lateral cervical X-ray in the swimming position, and lateral cervical X-ray with arm traction were performed in the supine position. The enhancements in the image fields were analyzed.
Results: There was a statistically significant difference for the increases in the view of cervical spines between SLC X-ray (12.60 +/- 7.48) and either lateral cervical X-ray with arm traction (21.73 +/- 9.78; p = 0.000) or in the swimming position (21.20 +/- 14.19; p = 0.001). Both arm traction and swimming position increased the field of view by approximately 9 mm. Increased visualization of the cervical spine occurred for 24 of the 40 participants using the arm traction view (60.0%) and 23 participants (57.5%) using the swimming position view-results found to be statistically similar according to the >/= 1/3 caudal vertebral height visualized (p = 0.902). Using the lateral cervical X-ray view, the number of cervical vertebrae visualized differed according to body mass index (BMI)-seven cervical vertebrae were visualized in participants with a BMI < 25 and six vertebrae were visualized in participants with a BMI >/= 25 (p = 0.007).
Conclusion: Lateral cervical X-rays with arm traction and swimming position enhance the view of SLC X-rays. An initial SLC X-ray including the lower third of the cervical spine (with C7), arm traction, and swimming position may be beneficial in visualizing the CTJ. However, patients with an increased BMI are unlikely to benefit from all three methods.
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| http://dx.doi.org/10.1007/s12245-010-0159-y | DOI Listing |
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