THE EVALUATION OF CERVICAL SPINE MOTION BELOW C2: A COMPARISON OF CINEROENTGENOGRAPHIC AND CONVENTIONAL ROENTGENOGRAPHIC METHODS

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Abstract
A comparison study of randomly selected patients who had roentgenographic investigation of the cervical spine by both cineroentgenography and conventional lateral roentgenograms in flexion, neutral position, and extension was made for the analysis of motion. The results of this investigation reveal that if lateral roentgenograms made in flexion, neutral position, and extension are carefully evaluated and compared, most of the information regarding abnormal motion can be detected. There were, however, a significant number of instances in which cineroentgenography demonstrated abnormal motion not detected on conventional roentgenograms. Cineroentgenography is, therefore, a valuable adjunctive technique and its continued utilization in the analysis of cervical spine motion is justified. Surprisingly, the converse situation of abnormal motion being observed by the lateral roentgenograms but not on cineroentgenography occurred in a few instances. Also observed was a high incidence of abnormal motion at one or both joints adjacent to a fusion. Whether this high incidence of abnormal motion is part of the disease process or is secondary to the imposed additional stress on the remaining active joints following surgery, remains an interesting speculation.

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