Observations and discussions of arachnoid granulation pits on the ancient human skeletons from Shandong Province

doi:10.16359/j.cnki.cn11-1963/q.2018.0027

Abstract

Abstract:

Arachnoid granulations, which are formed by arachnoid villus, can cause localized surface impressions in skeletal material, specifically dissolution-like small pits that are often misidentified as pathological lesions. In this paper, 114 human skeletal specimens unearthed from six sites, including Ji’nan Da Xinzhuang, Liu Jiazhuang and Qufu Olympic Sports Center were examined. The results of this research are as follows. 1) There is a high incidence of arachnoid granulation pits from ancient times to the present with no obvious difference between the sexes. 2) The maximum mean diameter of arachnoid membrane depressions is roughly 1-6mm with a significant difference between individuals increasing with age. 3) Locations of Pacchionian pits are most common in the parietal and frontal bones, with rare frequency in the occipital. Locations may differ between age groups. In conclusion, these dissolution-like small pits formed by arachnoid granulations, are easily confused with diseases characterized by bone erosion, such as intracranial infection, diploe of skull epidermoid cyst, eosinophilic granuloma and meningioma, and therefore osteologists should pay attention to their characteristics.

Key words: Ancient skeletons, Shandong, Arachnoid granulation pits, Characteristics, Identification

CLC Number:

Q983

ZHANG Xiaowen, GUO Junfeng, WANG Zimeng, HAO Daohua, ZHAO Yongsheng, ZHU Chao, CHEN Xuexiang, ZENG Wen. Observations and discussions of arachnoid granulation pits on the ancient human skeletons from Shandong Province[J]. Acta Anthropologica Sinica, 2019, 38(02): 245-253.

Figures/Tables 10

References 28

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时代Dynasty	存在Yes(n)	不存在No(n)	样本量Sample(n)	出现率OR(%)
商周Shang and Zhou	27	9	36	75.00%
战国至两汉Warring States to Han	51	10	61	83.61%
宋元明清Song to Qing	14	3	17	82.35%
合计Total	92	22	114	80.70%

时代Dynasty	存在Yes(n)	不存在No(n)	样本量Sample(n)	出现率OR(%)
商周Shang and Zhou	27	9	36	75.00%
战国至两汉Warring States to Han	51	10	61	83.61%
宋元明清Song to Qing	14	3	17	82.35%
合计Total	92	22	114	80.70%

组别Groups	存在Yes(n)	不存在No(n)	样本量Sample(n)	出现率OR(%)
男性Male	26	6	32	81.25%
女性Female	26	3	29	89.66%
合计Total	52	9	61	85.25%

组别Groups	存在Yes(n)	不存在No(n)	样本量Sample(n)	出现率OR(%)
男性Male	26	6	32	81.25%
女性Female	26	3	29	89.66%
合计Total	52	9	61	85.25%

组别Groups	存在Yes(n)	不存在No(n)	样本量Sample(n)	出现率OR(%)
青年组Youth	7	3	10	70.00%
壮年组Prime	16	4	20	80.00%
中年组Middle	25	3	28	89.29%
合计Total	48	10	58	82.76%