In vivo kinematic analysis of posterior-stabilized total knee arthroplasty for the valgus knee operated by the gap-balancing technique

Suzuki, Kôji; Hara, Noriyuki; Mikami, Sadayoshi; Tomita, Tadanori; Iwamoto, K.; Yamazaki, Takao; Sugamoto, Kazuomi; Matsuno, Shigeo

doi:10.1016/j.knee.2014.07.011

Cited by 15 publications

(8 citation statements)

References 23 publications

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“…This semi-constrained PS system reproducibly exhibited a mild external rotation with smooth posterior rolling back of the femoral condyles during deep knee bending in both WB and NWB conditions. These kinematics were similar to that of the standard PS TKAs [9][10][11][24][25][26][27][28][29]. Furthermore, post-cam engagement occurred in a relatively early phase of flexion, which contributed to the reproducible femoral roll-back.…”

Section: Discussionsupporting

confidence: 61%

“…However, a metaanalysis of the standard PS-TKA in this population revealed that significant improvement regarding deep knee bending is not always achieved [8]. Several studies using motion capture methods for the in vivo evaluation of knee kinematics in patients with PS-TKAs suggest that the external rotation of the femur relative to the tibia is important to perform deep knee bending [9][10][11][12][13]. However, the PS system with a large post, adopted in the CCK and semi-constrained TKA, may interfere with the axial rotation during flexion.…”

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confidence: 97%

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Semi-constrained posterior stabilized total knee arthroplasty reproduces natural deep knee bending kinematics

Sumino

Tomita

Sugamoto

et al. 2020

BMC Musculoskelet Disord

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Background: The Flexible Nichidai Knee Posterior Stabilized (FNK-PS) system was designed to provide relatively high varus-valgus stabilities without the stem extensions to patients with severe knee joint disorders. This is a combination of a large tibial post and high femoral cam adapted to a PS system. The aim of our study was to analyze the in vivo two-dimensional/three-dimensional registration kinematics of the FNK PS-total knee arthroplasty (TKA) system during deep knee bending. Methods: Nineteen knees from 15 total knee arthroplasty (TKA) patients who were able to squat with enough knee flexion were selected. During deep knee bending under weight bearing (WB) and non-weight bearing (NWB) conditions, we quantified range of motion, axial rotation, femoral anteroposterior translation, and post-cam engagement angle. Results: The maximum-flexion was significantly different between the two conditions. The mean axial femoral external rotation was 4.8°and 6.2°under WB and NWB conditions, respectively, at 120°flexion. Anteroposterior translation based on bicondylar posterior roll-back patterns was noted with increasing knee flexion. Both the medial and lateral femoral aspects were significantly more posterior during early to mid-flexion. Initial post-cam engagement occurred significantly earlier during flexion under NWB than under WB conditions. Under WB, the timing of the post-cam engagement correlated with the maximum flexion . Conclusions: The kinematics of the semi-constrained PS system reproducibly exhibited a mild external rotation with smooth posterior roll-back. This was assisted by the engagement of the large tibial post and high femoral cam during the early phase of flexion.

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Section: Discussionsupporting

confidence: 61%

mentioning

confidence: 97%

Semi-constrained posterior stabilized total knee arthroplasty reproduces natural deep knee bending kinematics

Sumino

Tomita

Sugamoto

et al. 2020

BMC Musculoskelet Disord

Self Cite

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“…In that respect, many studies have been performed both in vitro [2][3][4][5] and in vivo [6][7][8][9] to study knee kinematics, some of them focusing on influence of the main knee ligaments [10,11]. The results varied greatly across studies highlighting the high inter-individual variability.…”

Section: Introductionmentioning

confidence: 99%

Role of Ligaments in the Knee Joint Kinematic Behavior: Development and Validation of a Finite Element Model

Germain

Rohan

Rochcongar

et al. 2016

Computational Biomechanics for Medicine

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“…This dissatisfaction could be explained partly by changes in the kinematics of the knee after TKA (15) ; therefore, research attention has been focused on these changes. An image-matching technique has been used in previous studies for postoperative kinematic analysis in vivo (16)(17)(18). The advantage of the technique is that it can analyze the kinematics of the knee under active weight-bearing conditions.…”

Section: Discussionmentioning

confidence: 99%

Intraoperative analysis of the kinematics of the native knee including two-dimensional translation of the femur using a navigation system : a cadaveric study

et al. 2019

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The aim of this cadaveric study was to evaluate the intraoperative kinematics of the native knee including two-dimensional translation of the femur using a navigation system. Eight native knees of 4 fresh-frozen whole-body cadavers were used for the study. The kinematics of each knee were analyzed intraoperatively using the navigation system. Although anterior-posterior translation could not be assessed directly, it could be calculated using a formula derived from the parameters in the navigation system. The native knee showed external rotation of the femur in early knee flexion, transient internal rotation in mid flexion, and gradual external rotation in late flexion. There was no marked change in the coronal rotation angle of the mechanical axis during knee flexion. The femoral center moved anteriorly in early knee flexion and posteriorly in late flexion. The distance moved in the medial-lateral direction was relatively smaller than that in the anterior-posterior direction. Two-dimensional translation of the surgical epicondylar axis showed a medial pivot-like motion. In this cadaveric study, the kinematics of the native knee, including two-dimensional translation of the femur, could be satisfactorily assessed intraoperatively using a navigation system. The intraoperative kinematics of the knee can be analyzed in more detail using this methodology.

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In vivo kinematic analysis of posterior-stabilized total knee arthroplasty for the valgus knee operated by the gap-balancing technique

Cited by 15 publications

References 23 publications

Semi-constrained posterior stabilized total knee arthroplasty reproduces natural deep knee bending kinematics

Semi-constrained posterior stabilized total knee arthroplasty reproduces natural deep knee bending kinematics

Role of Ligaments in the Knee Joint Kinematic Behavior: Development and Validation of a Finite Element Model

Intraoperative analysis of the kinematics of the native knee including two-dimensional translation of the femur using a navigation system : a cadaveric study

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