下肢静脉曲张，行Perthes试验是为了检查（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25456' and id < 2144790 and id<>'2144790' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25456' and id > 2144790 and id<>'2144790' order by id asc limit 5