直腿抬高试验正常的标准是下肢抬高大于（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25673' and id < 2157716 and id<>'2157716' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25673' and id > 2157716 and id<>'2157716' order by id asc limit 5