Unverified75% confidenceDecision RuleTime unknown
膝间夹枕的厚度应保证两膝分开后大腿与地面平行（约15-20cm），过薄无法维持骨盆中立位，等于没夹；单纯买薄款膝枕对缓解侧睡髋痛几乎无效
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Unverified侧睡者选择夹腿枕的核心高度应等于两膝并拢时的自然间距，通常为15-20cm，过高会导致上方腿部外旋、拉伸髋关节反而加重不适85% similarUnverified护腰越宽覆盖越全面支撑越好，但会限制弯腰和坐下时的舒适度；日常防护12-15cm宽即可，超过20cm的高款仅适合卧床或术后固定82% similarUnverified单人吊床布面宽度≥1.5m可斜躺（对角线躺姿）显著减少背部弯曲，直躺型吊床长时间使用易造成脊柱蜷缩；追求平躺舒适度应选宽度≥1.8m的双人款82% similarUnverified侧睡者需要厚度≥6cm的垫子以避免髋部和肩部压到地面，仰睡者厚度3-5cm即可满足81% similarUnverified侧睡人群应选长度≥120cm的全身护腰抱枕，需同时支撑头颈、腰部、双膝三点，让脊柱保持水平；仅护腰段的短款(60cm)侧睡时上腿下压会造成髋关节和骨盆扭转80% similar
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