Spinal Fractures Clinical Trial
Official title:
Randomised Controlled Trial on Surgical vs Non-surgical Treatment of Type II Odontoid Fracture Treatment in the Elderly
A multicenter randomized controlled trial is performed in Sweden (Uppsala, Malmo and Stockholm) comparing surgery with posterior C1-C2 fusion and conservative treatment with a rigid collar. Follow up will be performed up to one year after start of treatment registering EQ5D, NDI and cervical CT scans. Mortality will be documented during follow-up. All direct and indirect costs of treatment will be registered and used for cost-effectiveness analysis.
50 patients, based on the following calculation of study size: The standard deviation for Neck Disability index, NDI, is just under 7, while "minimally clinical important difference" (MCID) is 7 points . That gives that 16 patients are needed in each group to get 80% power with a significance level of 5%. However, in the studied population the one year mortality rate is substantial, especially after a neck injury . In order to be able to draw conclusions from the study the investigators have elected to expand the study to 25 subjects in each group. Follow up: 1w, 6w, 3m, 1y with CT, Questionaires: NDI, EQ5D. Bone density measurement at injury. Extension flexion x-ray after 1 year. ;
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