Trabecular volumetric bone mineral density of the occipital bone at preferred screw placement sites measured by quantitative computed tomography

Manuel Moser; Dominik Adl Amini; Ichiro OkanoLisa OezelJennifer ShueJohn A. CarrinoAndrew A. SamaFrank P. CammisaFederico P. GirardiAlexander P. Hughes

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Trabecular volumetric bone mineral density of the occipital bone at preferred screw placement sites measured by quantitative computed tomography

机译：Trabecular volumetric bone mineral density of the occipital bone at preferred screw placement sites measured by quantitative computed tomography

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Abstract This study aimed at quantifying trabecular volumetric bone mineral density (vBMD) at the external occipital protuberance (EOP) and the upper cervical spine. A retrospective review of patients who underwent non‐contrast enhanced computed tomography of the cervical spine that included the occipital bone up to the EOP between 2007 and 2020 was conducted. Measurements of trabecular vBMD were performed in the occipital midline area, with the region of interest extending 4.5?mm above and below the center of the EOP, as well as the C1 lateral masses and the C2 vertebral body using asynchronous quantitative computed tomography. Eighty‐six patients (female, 37.2) were included for analysis. The patient population was 81.4 Caucasian with a mean ± SD age of 62.3?±?13.1 years. Total bone thickness at the EOP was 16.7?±?3.4?mm, with a ratio of trabecular to total bone thickness of 0.44. Trabecular vBMD (mean?±?SD) was significantly higher at the EOP than at C1 and C2 (EOP?=?612.3?±?145.8?mg/cm3, C1 average?=?290.3?±?66.5?mg/cm3, C2?=?305.8?±?78.8?mg/cm3; p??65 years of age, cervical vBMD was significantly lower, but remained high at the EOP. Clinical significance: Trabecular vBMD at the EOP is significantly higher than at the upper cervical vertebrae and remains high in older populations. Together with morphological information about the occipital bone, these results might be helpful for occipitocervical fixation when deciding about uni‐ or bicortical screw placement at the EOP.

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来源
《Journal of orthopaedic research》 |2022年第8期|1909-1917|共9页
作者
Manuel Moser; Dominik Adl Amini; Ichiro OkanoLisa OezelJennifer ShueJohn A. CarrinoAndrew A. SamaFrank P. CammisaFederico P. GirardiAlexander P. Hughes;
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作者单位

Department of Orthopaedic Surgery, Hospital for Special Surgery,Weill Cornell Medicine;

Department of Radiology and Imaging, Hospital for Special Surgery,Weill Cornell Medicine;

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正文语种英语
中图分类骨科学（运动系疾病、矫形外科学）;
关键词
bone mineral density; occipital bone; occipitocervical fixation; occipitocervical fusion; quantitative computed tomography;

Trabecular volumetric bone mineral density of the occipital bone at preferred screw placement sites measured by quantitative computed tomography

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