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关于骨折功能复位的描述,正确的是()

单选题
2021-12-27 22:59
A、旋转移位、分离移位不必完全矫正
B、缩短移位在成人下肢骨折不超过2cm
C、向侧方成角移位不必完全复位
D、前臂双骨折则要求对位、对线均好
E、长骨干横形骨折,骨折端对位至少达3/4左右,干骺端骨折至少应对位1/3左右
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正确答案
D

试题解析
骨折一般功能复位的标准是:①骨折部位的旋转移位、分离移位必须完全矫正。②缩短移位在成人下肢骨折不超过1cm;儿童若无骨骺损伤,下肢缩短在2cm以内,在生长发育过程中可自行矫正。③成角移位:下肢骨折轻微的向前或向后成角,与关节活动方向一致,日后可在骨痂改造期内自行矫正。向侧方成角移位,与关节活动方向垂直,日后不能矫正,必须完全复位。上肢骨折要求也不一致,肱骨干稍有畸形,对功能影响不大;前臂双骨折则要求对位、对线均好,否则影响前臂旋转功能。④长骨干横形骨折,骨折端对位至少达1/3左右,干骺端骨折至少应对位3/4左右。

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