Comparison between the shape of resected femoral sections and femoral prostheses used in total knee arthroplasty in Japanese patients: simulation using three-dimensional computed tomography.
Simulation of the femoral cut for total knee arthroplasty was performed in 44 knees using three-dimensional computed tomography. The three-dimensional images were measured, and the shape of the femur was compared to the provided femoral prosthesis. The ratio between the medial-lateral and anteroposterior dimensions of the three-dimensional images did not always match the prosthesis. The widths of the medial condyles of the three-dimensional images tended to be larger than those of the prosthesis. The lengths of the lateral posterior condyles of the three-dimensional images tended to be shorter than those of the prosthesis. These results suggest that a new prosthesis should be designed to achieve a better anatomical fit.
Urabe
Ken
K
Department of Orthopedic Surgery, Kitasato University School of Medicine, Kanagawa, Japan.
Miura
Hiromasa
H
Kuwano
Takashi
T
Matsuda
Shuichi
S
Nagamine
Ryuji
R
Sakai
Shuji
S
Masuda
Kouji
K
Iwamoto
Yukihide
Y
D000368:Aged; D000369:Aged, 80 and over; D000886:Anthropometry; D019645:Arthroplasty, Replacement, Knee; D044466:Asian People; D001696:Biomechanical Phenomena; D005260:Female; D005269:Femur / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006801:Humans; D021621:Imaging, Three-Dimensional; D007564:Japan; D007719:Knee Joint / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D017755:Prosthesis Fitting; D014057:Tomography, X-Ray Computed