[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

护具尺寸应按肘围/膝围周长选择而非年龄:护膝内径周长比肢体周长小1-2cm为宜,太松滑落无防护,太紧影响血液循环。3-6岁通常膝围18-22cm对应S码,7-10岁对应M码,需实测

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85%
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Long-term
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