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Preliminary study of a new real-time ultrasound method for measuring spinal and rib rotation in preoperative patients with adolescent idiopathic scoliosis.

By R G Burwell, R K Aujla, A A Cole, Alanah Kirby, R K Pratt, J K Webb and A Moulton

Abstract

A portable ultrasound machine with a linear array transducer was used by one observer (ASK) to evaluate the reproducibility for each of spinal (laminal) rotation and rib rotation in 13 preoperative patients with AIS (thoracic 7, thoracolumbar 6, mean Cobb angle 50 degrees, right 9, left 4, age 15.4 years, girls 10). With the subject in a prone position and her head supported, readings of spinal (laminal) and rib rotations were made directly on the back at 18 and 12 levels respectively. The subject was repositioned after walking around the room and a second set of spinal and rib rotations obtained (repeats). Conclusious. Repositioning the patient significantly alters some single level readings of lam inal rotation and rib rotation. Although the mean average spinal rotation and rib rotation each have acceptable reproducibility, repositioning the patient significantly alters the findings. In the appraisal of surgery by ultrasound the positional change reported here for (I) single level laminal rotation and rib rotation, and (2) mean average rotation imposes caution on the interpretation of the findings. The method enables the axial spine-nh rotation differences to be evaluated which is the subject of a separate paper

Publisher: IOS Press
Year: 2002
OAI identifier: oai:eresearch.qmu.ac.uk:1154
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