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Cross-sectional Anatomy of Ilium for Guiding Acetabular Component Placement Using High Hip Center Technique in Asian Population 被引量:5
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作者 Jian-lin Xiao Jian-lin Zuo +4 位作者 Peng liu Yan-Guo Qin xue-zhou li Tong liu Zhong-li Gao 《Chinese Medical Journal》 SCIE CAS CSCD 2015年第12期1579-1583,共5页
Background:Many clinical studies have been published involving the use of a high hip center (HHC),achieved good follow-up.However,there is a little anatomic guidance in the literature regarding the amount of bone s... Background:Many clinical studies have been published involving the use of a high hip center (HHC),achieved good follow-up.However,there is a little anatomic guidance in the literature regarding the amount of bone stock available for initial implant coverage in this area of the ilium.The purpose of this study was to evaluate the thickness and width of the human ilium and related acetabular cup coverage for guiding acetabular component placement in HHC.Methods:A total of 120 normal hips in 60 cases of adult patients from lower extremities computer tomographic angiography Digital Imaging and Communications in Medicine data were chosen for the study.After importing the data to the mimics software,we chose the cross sections every 5-mm increments from the rotational center of the hip to the cephalic of the ilium according the body sagittal axis,then we measured the thickness and width of the ilium for each cross section in axial plane,calculated the cup coverage at each chosen section.Results:At the acetabular dome,the mean thickness and width of the ilium were 49.71 ± 4.88 mm and 38.92 ± 3.67 mm,respectively,whereas at 1 cm above the dome,decreased to 41.35 ± 5.13 and 31.13 ± 3.37 respectively,and 2 cm above the dome,decreased to 31.25 ± 4.04 and 26.65 ± 3.43,respectively.Acetabular cup averaged coverage for 40-,50-,and 60-mm hemispheric shells,was 100%,89%,and 44% at the acetabular dome,100%,43.7%,and 27.5% for 1 cm above the dome,and 37.5%,21.9%,and 14.2% for 2 cm above the dome.Conclusions:HHC reconstructions within 1cm above the acetabular dome will be an acceptable and smaller diameter prosthesis would be better. 展开更多
关键词 ANATOMY HIP ILIUM ORTHOPEDICS Total Hip Arthroplasty
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Three-dimensional reconstruction method for measuring the knee valgus angle of the femur in northern Chinese adults 被引量:5
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作者 Tong liU Chen-yu WANG +4 位作者 Jian-lin XIAO Lan-yu ZHU xue-zhou li Yan-guo QIN Zhong-li GAO 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2014年第8期720-726,共7页
The purpose of this study was to establish a method for measuring the knee valgus angle from the ana- tomical and mechanical axes on three-dimensional reconstruction imaging models, and to use this method for estimati... The purpose of this study was to establish a method for measuring the knee valgus angle from the ana- tomical and mechanical axes on three-dimensional reconstruction imaging models, and to use this method for estimating an average knee valgus angle value for northern Chinese adults. Computed tomographic angiography data in DICOM format for 128 normal femurs from 64 adult subjects were chosen for analysis. After the femur images were subjected to three-dimensional reconstruction, the deepest point in the intercondylar notch (point A), the midpoint of the medullary cavity 20 cm above the knee-joint line (point B), and the landmark of the femoral head rotation center (point C) were identified on each three-dimensional model. The knee valgus angle was defined as the angle enclosed by the distal femoral anatomical axis (line AB) and the femoral mechanical axis (line AC). The average (mean+SD) of knee valgus angle for the 128 femurs was 6.20°±1.20° (range, 3.05° to 10.64°). Significant positive correlations were found between the knee valgus angles of the right and left sides and between the knee valgus angle and age. During total knee arthroplasty, choosing a valgus cut angle of approximately 6° may achieve a good result in reestablishing the natural mechanical alignment of the lower extremity for patients of northern Chinese ethnicity. Larger valgus cut angles should be chosen for older patients. 展开更多
关键词 Knee valgus angle Three-dimensional reconstruction femoral model Total knee arthroplasty NorthernChinese adults Preoperative design
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