Tibiofemoral kinematics in healthy and osteoarthritic knees during twisting

Kiyohara, Masato; Hamai, Satoshi; Gondo, Hirotaka; Higaki, Hidehiko; Ikebe, Satoru; Ushio, Tetsuro; Murakami, Koji; Nakashima, Yasuharu

doi:10.1016/j.jor.2020.03.051

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…Furthermore, the postoperative femoral rotational angles and kinematic patterns for every 5° interval of knee flexion were similar to those preoperatively. In previous studies, OA knees showed significantly decreased rotation during activities involving knee flexion [ 25 , 34 ] or twisting [ 26 ], which is consistent with the preoperative total femoral rotation (6.6°) in the current study. In a study based on CT images, Kawaguchi et al reported that inappropriate preoperative tibiofemoral rotational alignment and rotational alignment of the tibial and femoral components were risk factors for postoperative component rotational mismatch under non-weight-bearing conditions [ 35 ].…”

Section: Discussionsupporting

confidence: 91%

“…This study has several limitations. First, knee kinematics such as AP translation and axial rotation could vary based on the activity performed [ 24 – 26 ]. However, squatting is a frequent and important activity in daily life even after TKA.…”

Section: Discussionmentioning

confidence: 99%

“…For the preoperative knee, a 3D greyscale digital bone model was generated from CT images with a 512 × 512 image matrix, 0.35 mm × 0.35 mm/pixel, and 1-mm thickness, and density-based image-matching techniques were used to evaluate the 3D positions and orientations of the femur and tibia in each radiographic image obtained with the FPD (Fig. 1 ) [ 25 , 26 ]. Anatomic coordinate systems were embedded in each density-based volumetric bone model (Fig.…”

Section: Methodsmentioning

confidence: 99%

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Comparison of in vivo knee kinematics before and after bicruciate-stabilized total knee arthroplasty during squatting

Kiyohara

Hamai

Gondo

et al. 2021

BMC Musculoskelet Disord

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Background No studies have directly evaluated kinematic changes during squatting before and after bicruciate-stabilized total knee arthroplasty (BCS-TKA) with the dual cam-post mechanism and asymmetric surfaces. This study investigated the effect of BCS-TKA on changes to pre- and postoperative skeletal knee kinematics, to identify factors associated with postoperative skeletal kinematic parameters. Methods Seventeen knees in 17 patients were prospectively recruited before primary TKA for advanced medial knee osteoarthritis. Subjects underwent BCS-TKA and were evaluated more than 1 year postoperatively. In vivo dynamic skeletal knee kinematics were evaluated using periodic radiographic images collected during squatting to quantify the tibiofemoral functional extension/flexion angle, anteroposterior (AP) translation, and axial rotation angle using image-matching techniques. Rotational alignments of femoral and tibial components were measured postoperatively using computed tomography images. Results The pre- and postoperative tibiofemoral functional extension/flexion angles during squatting were 12.2° ± 6.7°/100.1° ± 16.8° and 9.6° ± 8.6°/109.4° ± 16.8°, respectively, with a significant difference in flexion angle (p < .05). Total AP translation was significantly larger postoperatively than preoperatively (10.8 mm ± 3.7 mm vs. 14.4 mm ± 4.2 mm, respectively; p < .05). The pre- and postoperative total rotation angles were 6.6° ± 3.0° and 6.4° ± 3.7°, respectively, indicating no significant difference. The pre- and postoperative tibiofemoral functional flexion angles were significantly associated with each other (p = .0434, r = .49). The postoperative total rotation angle was significantly smaller when the total component rotational mismatch angle between the femoral and tibial components was above 5° vs. below 5° (4.6° ± 2.7° vs. 8.3° ± 3.9°, respectively; p < .05). Conclusions BCS-TKA significantly increased the tibiofemoral functional flexion angles, with larger AP translation postoperatively. Both preoperative skeletal kinematics and surgical techniques affected the skeletal kinematics of the replaced knee. A total component rotational mismatch angle greater than 5° significantly decreased postoperative total knee rotation during squatting.

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