[Finite element analysis of changes in femoral stresses after elite total hip arthroplasty].
OBJECTIVE
To determine the variation in femoral stress after insertion of Elite cemented femoral prosthesis.


METHODS
Three-dimentional finite element models of the normal human femur and Elite femoral prosthesis were developed through CT scan. With the application of hip joint loading, quantitatively measure stress changes of an intact femur with corresponding femur inserted with Elite implants were measured.


RESULTS
Compared with intact femur, insertion of Elite implants into the femoral canal decreased the proximal femoral stresses level, especially in calcar femoral, femur wall and tuberositas. However, the stress in the prosthesis distal end.


CONCLUSIONS
Insertion of Elite implants induced significant stress shielding in the proximal femur, especially at calcar femoral, femur wall and tuberositas. However, stress concentrates in the prosthesis distal end.
He
Rong-Xin
RX
Department of Orthopaedics, The Second Affiliated Hospital, College of Medical Sciences, Zhejiang University, Hangzhou 310009, China.
Luo
Yin-Miao
YM
Yan
Shi-Gui
SG
Wu
Hao-Bo
HB
D019644:Arthroplasty, Replacement, Hip / Q000379:methods; D001696:Biomechanical Phenomena; D020342:Finite Element Analysis; D006621:Hip Joint / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D011474:Prosthesis Design; D013314:Stress, Mechanical; D013718:Tensile Strength