TY - JOUR
T1 - The biomechanical effect of the collar of a femoral stem on total hip arthroplasty
AU - Jeon, Insu
AU - Bae, Ji Yong
AU - Park, Jin Hong
AU - Yoon, Taek Rim
AU - Todo, Mitsugu
AU - Mawatari, Masaaki
AU - Hotokebuchi, Takao
N1 - Funding Information:
This work was supported by Nuclear R&D Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (2008-2006034).
PY - 2011
Y1 - 2011
N2 - To investigate the biomechanical effect of collars, finite element analyses are carried out through two hip joints that are implanted using collared and collarless stems, respectively, and an intact hip joint model. For the analyses, the sacrum, coxal bone, and the cancellous and cortical bones of a femur are modelled using finite elements based on X-ray computed tomographic images taken from a 27-year-old woman. From the results, it is found that a collar with perfect calcar contact prevents stem subsidence and decreases the proximal-lateral gap and the lateral stem tilting. Therefore, it can impart reasonable biomechanical stability for total hip arthroplasty. However, its low load transmission ability and increased stem tilting effect due to the imperfect contact between the collar and the calcar are found to be serious problems that need to be solved. Results of clinical follow-up are presented for supporting the computational results.
AB - To investigate the biomechanical effect of collars, finite element analyses are carried out through two hip joints that are implanted using collared and collarless stems, respectively, and an intact hip joint model. For the analyses, the sacrum, coxal bone, and the cancellous and cortical bones of a femur are modelled using finite elements based on X-ray computed tomographic images taken from a 27-year-old woman. From the results, it is found that a collar with perfect calcar contact prevents stem subsidence and decreases the proximal-lateral gap and the lateral stem tilting. Therefore, it can impart reasonable biomechanical stability for total hip arthroplasty. However, its low load transmission ability and increased stem tilting effect due to the imperfect contact between the collar and the calcar are found to be serious problems that need to be solved. Results of clinical follow-up are presented for supporting the computational results.
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U2 - 10.1080/10255842.2010.493513
DO - 10.1080/10255842.2010.493513
M3 - Article
C2 - 21271417
AN - SCOPUS:79251508652
SN - 1025-5842
VL - 14
SP - 103
EP - 112
JO - Computer Methods in Biomechanics and Biomedical Engineering
JF - Computer Methods in Biomechanics and Biomedical Engineering
IS - 1
ER -