KEN OKAZAKI
Department School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine Position Professor and Division head |
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Article types | Original article |
Language | English |
Peer review | Peer reviewed |
Title | In vivo kinematics of gait in posterior-stabilized and bicruciate-stabilized total knee arthroplasties using image-matching techniques. |
Journal | Formal name:International orthopaedics Abbreviation:Int Orthop ISSN code:14325195/03412695 |
Domestic / Foregin | Foregin |
Volume, Issue, Page | 42(11),pp.2573-2581 |
Author and coauthor | Murakami Koji, Hamai Satoshi, Okazaki Ken, Wang Yifeng, Ikebe Satoru, Higaki Hidehiko, Shimoto Takeshi, Mizu-Uchi Hideki, Akasaki Yukio, Nakashima Yasuharu |
Publication date | 2018/11 |
Summary | 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. |
DOI | 10.1007/s00264-018-3921-z |
PMID | 29623458 |