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Abstract #4658

The Morphological Development of Hand Knob Areas in Children Aged 6m to 10 years

Fan Wu1, Xianjun Li1, Yuli Zhang1, Miaomiao Wang1, Congcong Liu1, Xiaoyu Wang1, Chao Jin1, Mengxuan Li1, Cong Tian1, Peiyao Chen1, Xiaocheng Wei2, and Jian Yang1
1Department of Diagnostic Radiology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China, 2MR Research China, GE Healthcare, Xi'an, China

The cortical representation of hand motor function, hand knob region, is localized in the precentral gyrus. We found that the age-related rapid development of hand knob areas peaks at 4-5 years, and the left side increases faster than right. And the different increase rate between the left and right hand knob regions of normal children may be related to dominant hemisphere of handedness. This study will help to understand the process of hand function development in children and provide the research basis for the study of the upper limb pathway of the nerve center.

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