Paul Souvik, Singh Sukhmin, Raja Balgovind S, Mishra Dipun, Kalia R B
Department of Orthopaedics, All India Institute of Medical Sciences, Rishikesh, Rishikesh, Uttarakhand 249201 India.
Indian J Orthop. 2020 Oct 20;55(3):606-613. doi: 10.1007/s43465-020-00267-4. eCollection 2021 Jun.
The acetabular morphology has shown to differ among different regions of the world. Multiplanar evaluation by computed tomography (CT) scan is the key to assess acetabular depth, version, and inclination at the same time which have been rarely explored before in the Indian population. We present an anthropometric study of the native acetabulum by CT based coronal, sagittal, and axial parameters in the Northern Indian population.
The acetabular anteversion (AA), acetabular angle of sharp (AAS), sagittal acetabular angle (SAA), lateral center edge angle (LCEA), acetabular depth (AD), acetabular horizontal offset (AHO), extrusion index (EI) and acetabular depth ratio (ADR) was measured in CT scans of 122 patients (244 hips) without any bony pathologies. LCEA < 20°, ADR < 250, AD < 9 mm, AAS > 43°, and EI ≥ 25% were taken as criteria for dysplastic acetabulum.
There were 62 males and 60 females included in the study with a mean age of 63.8 ± 17.2 years (21-98 years). In this study, females were having significantly lower ADR ( = 0.002) and higher EI ( = 0.01) than males. The prevalence of dysplasia was 3.2% according to LCEA and 1.6% while combining all of the criteria.
There are prominent differences in acetabular depth in the Indian population compared with the population of Western countries or other parts of Asia. Females were shown to have shallower acetabulum than males. The comparative analysis of radiographic parameters obtained from our study with the data available on different country-based studies can help better understanding the acetabular morphology of Indian as well as the worldwide population.
Retrospective cross-sectional study.
髋臼形态在世界不同地区存在差异。通过计算机断层扫描（CT）进行多平面评估是同时评估髋臼深度、前倾角和倾斜度的关键，而此前在印度人群中对此研究较少。我们通过基于CT的冠状面、矢状面和轴面参数，对印度北部人群的天然髋臼进行了人体测量学研究。
在122例无任何骨质病变患者（244个髋关节）的CT扫描中测量髋臼前倾角（AA）、髋臼锐利角（AAS）、髋臼矢状角（SAA）、外侧中心边缘角（LCEA）、髋臼深度（AD）、髋臼水平偏移（AHO）、挤压指数（EI）和髋臼深度比（ADR）。LCEA＜20°、ADR＜250、AD＜9mm、AAS＞43°和EI≥25%被作为髋臼发育不良的标准。
本研究纳入62例男性和60例女性，平均年龄63.8±17.2岁（21 - 98岁）。在本研究中，女性的ADR显著低于男性（P = 0.002），EI显著高于男性（P = 0.01）。根据LCEA标准，发育不良的患病率为3.2%，综合所有标准时为1.6%。
与西方国家或亚洲其他地区人群相比，印度人群的髋臼深度存在显著差异。女性的髋臼比男性更浅。将我们研究获得的影像学参数与不同国家研究的现有数据进行对比分析，有助于更好地了解印度以及全球人群的髋臼形态。
回顾性横断面研究。
