TY - JOUR
T1 - In vivo kinematics of gait in posterior-stabilized and bicruciate-stabilized total knee arthroplasties using image-matching techniques
AU - Murakami, Koji
AU - Hamai, Satoshi
AU - Okazaki, Ken
AU - Wang, Yifeng
AU - Ikebe, Satoru
AU - Higaki, Hidehiko
AU - Shimoto, Takeshi
AU - Mizu-uchi, Hideki
AU - Akasaki, Yukio
AU - Nakashima, Yasuharu
N1 - Funding Information:
Acknowledgments This work was supported by a grant from the Kaibara Morikazu Medical Science Promotion Foundation. The authors thank Junji Kishimoto, a statistician from the Digital Medicine Initiative at Kyushu University, for his valuable comments and suggestions regarding the statistical analyses.
Funding Information:
This work was supported by a grant from the Kaibara Morikazu Medical Science Promotion Foundation. The authors thank Junji Kishimoto, a statistician from the Digital Medicine Initiative at Kyushu University, for his valuable comments and suggestions regarding the statistical analyses. The authors declare that they have no conflict of interest.
Publisher Copyright:
© 2018, SICOT aisbl.
PY - 2018/11/1
Y1 - 2018/11/1
N2 - Purpose: This study aimed to evaluate the effects of two types of total knee arthroplasty (TKA) designs: posterior-stabilized (PS) and bicruciate-stabilized (BCS) on in vivo kinematics during gait. Methods: Continuous X-ray images of the gait were taken using a flat panel detector for 23 PS and BCS TKAs. We analyzed the tibiofemoral implant flexion angle, anteroposterior (AP) translation, axial rotation, and anterior/posterior cam-post contact using image-matching techniques. Results: Double knee actions were demonstrated for the PS and BCS design (35 and 61%, respectively, p = 0.08). The tibiofemoral AP positions were significantly more posterior at peak extension (− 1.7 ± 2.2 and 1.0 ± 2.5 mm, respectively, p < 0.01) and anterior at peak flexion (1.3 ± 2.3 and − 0.8 ± 2.8 mm, respectively, p = 0.01) for the PS design than for the BCS design, with a significant difference in AP translation (3.0 ± 3.9 mm anterior and 1.7 ± 2.8 mm posterior, respectively, p < 0.01). Anterior/posterior tibial post contacts were found in 83/4% and 74/30% for the PS and BCS designs, respectively, with a significant difference in posterior contact (p = 0.72/0.04, respectively). Conclusion: The knee flexion pattern, tibiofemoral AP translation, axial rotation, and cam-post contact during gait varied, depending on the type of implant, the PS and BCS designs.
AB - Purpose: This study aimed to evaluate the effects of two types of total knee arthroplasty (TKA) designs: posterior-stabilized (PS) and bicruciate-stabilized (BCS) on in vivo kinematics during gait. Methods: Continuous X-ray images of the gait were taken using a flat panel detector for 23 PS and BCS TKAs. We analyzed the tibiofemoral implant flexion angle, anteroposterior (AP) translation, axial rotation, and anterior/posterior cam-post contact using image-matching techniques. Results: Double knee actions were demonstrated for the PS and BCS design (35 and 61%, respectively, p = 0.08). The tibiofemoral AP positions were significantly more posterior at peak extension (− 1.7 ± 2.2 and 1.0 ± 2.5 mm, respectively, p < 0.01) and anterior at peak flexion (1.3 ± 2.3 and − 0.8 ± 2.8 mm, respectively, p = 0.01) for the PS design than for the BCS design, with a significant difference in AP translation (3.0 ± 3.9 mm anterior and 1.7 ± 2.8 mm posterior, respectively, p < 0.01). Anterior/posterior tibial post contacts were found in 83/4% and 74/30% for the PS and BCS designs, respectively, with a significant difference in posterior contact (p = 0.72/0.04, respectively). Conclusion: The knee flexion pattern, tibiofemoral AP translation, axial rotation, and cam-post contact during gait varied, depending on the type of implant, the PS and BCS designs.
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U2 - 10.1007/s00264-018-3921-z
DO - 10.1007/s00264-018-3921-z
M3 - Article
C2 - 29623458
AN - SCOPUS:85045042076
VL - 42
SP - 2573
EP - 2581
JO - International Orthopaedics
JF - International Orthopaedics
SN - 0341-2695
IS - 11
ER -