[名词解释] 分离移位

脊椎滑脱 某夫妻均为常染色体隐性遗传病携带者，则其出生儿发病概率为() ["A．1/4","B．1/2","C．100%","D．1/8","E．1/16"] 铅线 夹心椎 分离性感觉障碍最易出现于() ["A．周围神经病变","B．脊神经节病变","C．脊髓前角病变","D．脊髓横贯性损害","E．脊髓中央病变"] 分离移位