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BioMed Research International
Volume 2015, Article ID 459612, 9 pages
Research Article

Three-Dimensional Analysis of the Characteristics of the Femoral Canal Isthmus: An Anatomical Study

1Department of Orthopaedics, Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing 100853, China
2Department of Orthopaedics, Affiliated Hospital of the Academy of Military Medical Sciences, No. 8, Dongdajie Road, Beijing 100071, China
3Department of Orthopaedics, Beijing Tsinghua Chang Gung Hospital, No. 1, Block Tiantongyuan North, Beijing 102218, China

Received 31 March 2015; Revised 20 May 2015; Accepted 21 May 2015

Academic Editor: Radovan Zdero

Copyright © 2015 Xiu-yun Su et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. To establish a new approach for measuring and locating the femoral intramedullary canal isthmus in 3-dimensional (3D) space. Methods. Based on the computed tomography data from 204 Chinese patients, 3D models of the whole femur and the corresponding femoral isthmus tube were reconstructed using Mimics software (Materialise, Haasrode, Belgium). The anatomical parameters of the femur and the isthmus, including the femur length and radius, and the isthmus diameter and height, were measured accordingly. Results. The mean ratio of the isthmus height versus the femoral height was 55 ± 4.8%. The mean diameter of the isthmus was 10.49 ± 1.52 mm. The femoral length, the isthmus diameter, and the isthmus tube length were significantly larger in the male group. Significant correlations were observed between the femoral length and the isthmus diameter (, ) and between the femoral length and the isthmus height (, ). Stepwise linear regression analyses demonstrated that the femoral length and radius were the most important factors influencing the location and dimension of the femoral canal isthmus. Conclusion. The current study developed a new approach for measuring the femoral canal and for optimization of customer-specific femoral implants.