Functional diagnostics of the cervical spine using computer tomography |
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Authors: | J Dvorak L Penning J Hayek M M Panjabi D Grob R Zehnder |
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Institution: | (1) Department of Neurology and Orthopedic Surgery, Wilhelm Schulthess Hospital, Zurich, Switzerland;(2) Department of Neuroradiology, University Hospital of Groningen, Groningen, The Netherlands;(3) Section of Orthopedic Surgery, Department of Biomechanics, New Haven, Connecticut, USA;(4) Biomechanic Research, M.Müller, Institut, Berne, Switzerland |
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Abstract: | Summary 35 healthy adults and 137 patients after cervical spine injury were examined by functional CT. The range of axial rotation at the level occiput/atlas, atlas/axis and the segment below were measured in all subjects. A rotation occiput/atlas of more than 7°, and C1/C2 more than 54° could indicate segmental hypermobility, a rotation at the segment C1/C2 less than 29° to hypomobility. According to the postulated normal values based upon a 98% confidence level, out of 137 patinets examined after cervical spine injury and with therapyresistant neck pain, 45 showed signs of segmental hypermobility of the upper cervical spine, 17 showed hyper- or hypomobility at different levels, 10 patients presented segmental hypomobility at C1/C2 level alone. In all patients, according to the clinical assessment, functional pathology was suspected in the upper cervical spine. Surgical correction of rotatory instability should be considered as a possible therapeutic procedure after successful diagnostic stabilisation of the cervical spine by minerva cast.Paper presented at the Meeting of the Cervical Spine Research Society, June 21–24, 1987, Pavia, Italy |
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Keywords: | Cervical spine Functional CT-scan Instability Fusion |
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