TY - JOUR
T1 - Three-dimensional Analysis of Computed Tomography-Based Navigation System for Total Knee Arthroplasty. The Accuracy of Computed Tomography-Based Navigation System
AU - Mizu-uchi, Hideki
AU - Matsuda, Shuichi
AU - Miura, Hiromasa
AU - Higaki, Hidehiko
AU - Okazaki, Ken
AU - Iwamoto, Yukihide
PY - 2009/10
Y1 - 2009/10
N2 - We evaluated the postoperative alignment of 37 primary total knee arthroplasties performed using a computed tomography-based navigation system (Vector Vision Knee 1.5; Brain Lab, Germany) with a new 3-dimensional analysis. The mean coronal femoral angle was 89.0° ± 1.4° (85.5°-92.8°), and the coronal tibial component was 89.2° ± 1.0° (87.4°-91.6°). The hip-knee-ankle angle was observed to be 178.2° ± 1.5° (173.9°-181.8°). The external rotational alignment of the femoral component relative to the surgical epicondylar axis was -0.5° ± 1.7° (-3.2° to 3.4°). The results demonstrated that a computed tomography-based navigation system provided a reasonably satisfactory component alignment. The discrepancy between the 2-dimensional and 3-dimensional evaluations was 1.0° ± 0.9° (0.1°-3.4°). Three-dimensional analysis is necessary to evaluate the accuracy of the navigation system.
AB - We evaluated the postoperative alignment of 37 primary total knee arthroplasties performed using a computed tomography-based navigation system (Vector Vision Knee 1.5; Brain Lab, Germany) with a new 3-dimensional analysis. The mean coronal femoral angle was 89.0° ± 1.4° (85.5°-92.8°), and the coronal tibial component was 89.2° ± 1.0° (87.4°-91.6°). The hip-knee-ankle angle was observed to be 178.2° ± 1.5° (173.9°-181.8°). The external rotational alignment of the femoral component relative to the surgical epicondylar axis was -0.5° ± 1.7° (-3.2° to 3.4°). The results demonstrated that a computed tomography-based navigation system provided a reasonably satisfactory component alignment. The discrepancy between the 2-dimensional and 3-dimensional evaluations was 1.0° ± 0.9° (0.1°-3.4°). Three-dimensional analysis is necessary to evaluate the accuracy of the navigation system.
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U2 - 10.1016/j.arth.2008.07.007
DO - 10.1016/j.arth.2008.07.007
M3 - Article
C2 - 18848426
AN - SCOPUS:70349243682
SN - 0883-5403
VL - 24
SP - 1103
EP - 1110
JO - Journal of Arthroplasty
JF - Journal of Arthroplasty
IS - 7
ER -