Unverified90% confidenceDecision RuleTime unknown

坐垫宽度应比坐骨结节间距（IT宽度）宽约20-30mm。测量方法：坐在瓦楞纸上留下压痕，两凹陷中心间距即为坐骨宽度，多数男性110-130mm，女性120-145mm

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