新的枕颈中立位影像学参数：枕颈倾斜度

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Abstract Objective To evaluate the clinical application value of occipitocervical inclination (OCI) by Pearson correlation analysis of OCI and occipitocervical parameters.Methods A total of 416 outpatients without neck and shoulder symptoms were enrolled，including 177 males and 239 females，with an average age of (49.44±14.54)years (18~85 years).Occipitocervical parameters were measured on standard lateral cervical Xray films by PACS system，including OCI，occipitocervical angle (OCA)，cervical lordosis (CL)，and C_2～7 sagittal vertical axis (C_2～7 SVA)，T₁ slope (T₁S).SPSS20.0 was used in statistical analysis.Results OCI，OCA，CL，T1S，SVA were (111.14±8.68)°，(22.97±8.02)°，(17.02±11.32)°，(26.47±6.90)°，(19.08±9.48)mm，respectively.There was a significant difference between genders of OCA，CL，T1S (P＜0.05).The Pearson correlation coefficient( r ) between OCI and OCA，SVA were 0.623 (P＜0.001)，0.433(P＜0.001)，respectively.Conclusion Occipitocervical (OCI) as occipitocervical sagittal parameter is a simple，stable and reliable.We recommend that the a normal OCI of Chinese as 110°，which could be used to determine the neutral occipitocervical position quickly and effectively and evaluate the cervical sagittal balance.

Key words： occipitocervical inclination occipitocervical fusion sagittal balance

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