Full Text:   <2663>

Summary:  <1818>

CLC number: R687.4

On-line Access: 2014-08-05

Received: 2014-01-22

Revision Accepted: 2014-05-11

Crosschecked: 2014-07-25

Cited: 2

Clicked: 7206

Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE B 2014 Vol.15 No.8 P.720-726


Three-dimensional reconstruction method for measuring the knee valgus angle of the femur in northern Chinese adults*

Author(s):  Tong Liu1, Chen-yu Wang2, Jian-lin Xiao1, Lan-yu Zhu3, Xue-zhou Li4, Yan-guo Qin4, Zhong-li Gao1

Affiliation(s):  1. Department of Orthopedics, China-Japan Union Hospital of Jilin University, Changchun 130033, China; more

Corresponding email(s):   liutong1986@gmail.com

Key Words:  Knee valgus angle, Three-dimensional reconstruction femoral model, Total knee arthroplasty, Northern Chinese adults, Preoperative design

Tong Liu, Chen-yu Wang, Jian-lin Xiao, Lan-yu Zhu, Xue-zhou Li, Yan-guo Qin, Zhong-li Gao. Three-dimensional reconstruction method for measuring the knee valgus angle of the femur in northern Chinese adults[J]. Journal of Zhejiang University Science B, 2014, 15(8): 720-726.

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author="Tong Liu, Chen-yu Wang, Jian-lin Xiao, Lan-yu Zhu, Xue-zhou Li, Yan-guo Qin, Zhong-li Gao",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Three-dimensional reconstruction method for measuring the knee valgus angle of the femur in northern Chinese adults
%A Tong Liu
%A Chen-yu Wang
%A Jian-lin Xiao
%A Lan-yu Zhu
%A Xue-zhou Li
%A Yan-guo Qin
%A Zhong-li Gao
%J Journal of Zhejiang University SCIENCE B
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%N 8
%P 720-726
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%D 2014
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B1400019

T1 - Three-dimensional reconstruction method for measuring the knee valgus angle of the femur in northern Chinese adults
A1 - Tong Liu
A1 - Chen-yu Wang
A1 - Jian-lin Xiao
A1 - Lan-yu Zhu
A1 - Xue-zhou Li
A1 - Yan-guo Qin
A1 - Zhong-li Gao
J0 - Journal of Zhejiang University Science B
VL - 15
IS - 8
SP - 720
EP - 726
%@ 1673-1581
Y1 - 2014
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B1400019

The purpose of this study was to establish a method for measuring the knee valgus angle from the anatomical 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.



Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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