比较有移位和无移位组有或无骨折片的患者骨不连和缺血性坏死发生率。
The rates of non-union and avascular necrosis in the presence or absence of fragmentation were compared in both undisplaced and displaced groups.
CT对无移位的齿状突骨折和轻度环枢椎脱位不敏感。
Odontoid fracture could not be shown with CT if without atlantoaxial dislocation.
结果：无移位患者中有460例无骨折碎片，11 例有骨折碎片，其并发症发生率分别为14%和18%。
Results The undisplaced cases comprised 460 non-fragmented and 11 fragmented fractures. The complication rates were 14% and 18%, respectively.
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