Cognitive Scaffold

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MENTAL MODEL · M2017

Unclosed Skull / Jie Lu

Unclosed Skull / Jie Lu
BehaviorHigh supportOrganizational Behavior
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Updated 2026-07-31

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INTRODUCTION

English translation pending.

CORE DEFINITION

Jie lu describes an infant whose fontanel does not close on schedule but instead grows wider, accompanied by separation of the cranial sutures. Traditional theory attributes it to insufficient kidney qi and empty brain marrow, and in modern terms it overlaps with hydrocephalus and other causes of abnormal head growth. The qualifier is that it is a signal of congenital insufficiency rather than a standalone diagnosis, so it must be read alongside overall development.

SCAFFOLDING EFFECT

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- Signal reading: treat the open roof as evidence that the substrate filling the skull is missing - Screening trigger: check head circumference and closure timing against normal milestones - Diagnostic caution: use it as one sign within the whole picture, never in isolation

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Kidney essence fills the marrow and governs bone, so the skull closes as the brain and marrow mature. When essence is insufficient, the vault is not filled and internal pressure keeps the sutures apart, so the fontanel widens instead of closing. Measuring head circumference and closure timing therefore gives an early window into whether the substrate supply is adequate.

MINIMUM ACTION

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Source support: Explicit

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    baike.baidu.comhttps://baike.baidu.com/item/%E8%A7%A3%E9%A2%85ZH · Explicit
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