Accuracy and clinical usefulness of scoliosis measurement with magnetic spine mapping--Ortelius

Bratislavské lekárske listy
M ZabkaT Uhrin

Abstract

Our objective was to assess the accuracy of radiation-free magnetic method of scoliosis curve measurement (Ortelius 800) and its usefulness in clinical practice, as well as to judge whether it can replace x-rays, which represent currently the golden standard for scoliosis measurement. Patients with adolescent idiopathic scoliosis have to undergo multiple full-length spinal x-rays. Repeated exposure to ionizing radiation leads to higher incidence of breast cancer, thyroid cancer, and leukemia. One of the radiation-free methods that are candidates for replacing the x-rays is the magnetic measurement of the spine with Ortelius 800. Twenty-eight patients with adolescent idiopathic scoliosis were measured with Ortelius. Data from Ortelius were compared with standard spinal x-rays taken the same week. The average Cobb's angle measured by x-ray was 35.11 degrees. The average absolute difference between Ortelius and x-rays was 6.69 degrees. The difference was statistically significant (p=0.0443). An acceptable difference was measured in subgroup of curves that do not exceed 40 degrees (difference 5, p=0.8915). Ortelius is most accurate in curves in range of 15-30 degrees of Cobb's angle. In larger curves it is increasingly inaccurate. ...Continue Reading

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