scholarly journals Kinematically Aligned Total Knee Arthroplasty Using Medial Pivot Knee Prosthesis Enhances Medial Pivot Motion: A Comparative Kinematic Study With Mechanically Aligned Total Knee Arthroplasty

2022 ◽  
Vol 13 ◽  
pp. 24-28
Author(s):  
Kazuya Kaneda ◽  
Yasuo Niki ◽  
Yuji Kuroyanagi ◽  
Shu Kobayashi ◽  
Kengo Harato ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Kinematic Study ◽  
Medial Pivot ◽  
Total Knee

scholarly journals Over-constrained kinematic of the medial compartment leads to lower clinical outcomes after total knee arthroplasty

2021 ◽  
Author(s):  
Nicola Pizza ◽  
Stefano Di Paolo ◽  
Raffaele Zinno ◽  
Giulio Maria Marcheggiani Muccioli ◽  
Piero Agostinone ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Clinical Outcomes ◽  
Knee Arthroplasty ◽  
Motor Task ◽  
Medial Compartment ◽  
Level Of Evidence ◽  
Contact Points ◽  
Sit To Stand ◽  
Medial Pivot ◽  
Total Knee

Abstract Purpose To investigate if postoperative clinical outcomes correlate with specific kinematic patterns after total knee arthroplasty (TKA) surgery. The hypothesis was that the group of patients with higher clinical outcomes would have shown postoperative medial pivot kinematics, while the group of patients with lower clinical outcomes would have not. Methods 52 patients undergoing TKA surgery were prospectively evaluated at least a year of follow-up (13.5 ± 6.8 months) through clinical and functional Knee Society Score (KSS), and kinematically through dynamic radiostereometric analysis (RSA) during a sit-to-stand motor task. Patients received posterior-stabilized TKA design. Based on the result of the KSS, patients were divided into two groups: “KSS > 70 group”, patients with a good-to-excellent score (93.1 ± 6.8 points, n = 44); “KSS < 70 group”, patients with a fair-to-poor score (53.3 ± 18.3 points, n = 8). The anteroposterior (AP) low point (lowest femorotibial contact points) translation of medial and lateral femoral compartments was compared through Student’s t test (p < 0.05). Results Low point AP translation of the medial compartment was significantly lower (p < 0.05) than the lateral one in both the KSS > 70 (6.1 mm ± 4.4 mm vs 10.7 mm ± 4.6 mm) and the KSS < 70 groups (2.7 mm ± 3.5 mm vs 11.0 mm ± 5.6 mm). Furthermore, the AP translation of the lateral femoral compartment was not significantly different (p > 0.05) between the two groups, while the AP translation of the medial femoral compartment was significantly higher for the KSS > 70 group (p = 0.0442). Conclusion In the group of patients with a postoperative KSS < 70, the medial compartment translation was almost one-fourth of the lateral one. Surgeons should be aware that an over-constrained kinematic of the medial compartment might lead to lower clinical outcomes. Level of evidence II.

No differences in patient-reported outcomes between medial pivot insert and symmetrical insert in total knee arthroplasty: A randomized analysis

The Knee ◽  
2018 ◽  
Vol 25 (6) ◽  
pp. 1254-1261 ◽  
Author(s):  
Kohei Nishitani ◽  
Moritoshi Furu ◽  
Shinichiro Nakamura ◽  
Shinichi Kuriyama ◽  
Masahiro Ishikawa ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Patient Reported Outcomes ◽  
Patient Reported ◽  
Medial Pivot ◽  
Total Knee

scholarly journals Early resumption of driving within 3 weeks following patient-specific instrumented total knee arthroplasty: an evaluation of 160 cases

2019 ◽  
Vol 4 (2) ◽  
pp. 88-92
Author(s):  
Ikram Nizam ◽  
Ashish Batra ◽  
Sophia Gogos
Keyword(s):  
Total Knee Arthroplasty ◽  
Median Time ◽  
Knee Arthroplasty ◽  
Patient Specific ◽  
Level Of Evidence ◽  
The Third ◽  
Ankle Joints ◽  
Medial Pivot ◽  
Total Knee ◽  
Detailed Questionnaire

ObjectivesMost patients want to resume normal activities as soon as possible after total knee arthroplasty (TKA), with driving an integral aspect to re-establish social and recreational independence. This study aimed to determine when patients resumed driving after TKA.MethodsAll patients undergoing patient-specific instrumented (PSI) medial pivot TKA between January 2017 and April 2018 were included. Patients who did not drive were excluded. A detailed questionnaire was sent to patients 2 weeks after surgery to record their driving status. 50 patients were randomly selected to assess flexion at the hip, knee and ankle joints while seated in the driver’s seat of their own vehicle.Results160 patients (female=94 and male=66) with a mean age of 68 years (45–90 years) underwent a PSI TKA (left side [L]=75, right side [R]=85). 73% patients returned to driving within the first 3 weeks after surgery, of which 15 (10%) resumed driving within the first postoperative week, 52 (35%) in the second week and 41 (28%) in the third week. The median time to resume driving following surgery was 3 weeks for both operative sides, with IQR of 2.0 (L) and 1.0 (R).ConclusionA majority of patients resume driving within 3 weeks after undergoing a PSI TKA, regardless of operative side or transmission of vehicle.Level of evidenceIV

An 11- to 15-year clinical outcome study of the Advance Medial Pivot total knee arthroplasty

2016 ◽  
Vol 98-B (8) ◽  
pp. 1050-1055 ◽  
Author(s):  
Th. Karachalios ◽  
S. Varitimidis ◽  
K. Bargiotas ◽  
M. Hantes ◽  
N. Roidis ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Clinical Outcome ◽  
Knee Arthroplasty ◽  
Outcome Study ◽  
Medial Pivot ◽  
Total Knee ◽  
Clinical Outcome Study

Total knee arthroplasty using the total condylar III knee prosthesis

1991 ◽  
Vol 6 (4) ◽  
pp. 341-350 ◽  
Author(s):  
Areesak L. Chotivichit ◽  
Andrea Cracchiolo ◽  
Gregory H. Chow ◽  
Frederick Dorey
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Total Knee

The effect of knee prosthesis design on tibiofemoral biomechanics during extension tasks following total knee arthroplasty

The Knee ◽  
2019 ◽  
Vol 26 (5) ◽  
pp. 1010-1019
Author(s):  
Aaron Beach ◽  
Gianmarco Regazzola ◽  
Thomas Neri ◽  
Richard Verheul ◽  
David Parker
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Prosthesis Design ◽  
Total Knee

scholarly journals A Wireless Visualized Sensing System with Prosthesis Pose Reconstruction for Total Knee Arthroplasty

Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 2909 ◽  
Author(s):  
Hanjun Jiang ◽  
Shaolin Xiang ◽  
Yanshu Guo ◽  
Zhihua Wang
Keyword(s):  
Total Knee Arthroplasty ◽  
Femoral Component ◽  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Image Data ◽  
Force Balance ◽  
Prototype System ◽  
Sensing System ◽  
Flexion Extension ◽  
Total Knee

The surgery quality of the total knee arthroplasty (TKA) depends on how accurate the knee prosthesis is implanted. The knee prosthesis is composed of the femoral component, the plastic spacer and the tibia component. The instant and kinetic relative pose of the knee prosthesis is one key aspect for the surgery quality evaluation. In this work, a wireless visualized sensing system with the instant and kinetic prosthesis pose reconstruction has been proposed and implemented. The system consists of a multimodal sensing device, a wireless data receiver and a data processing workstation. The sensing device has the identical shape and size as the spacer. During the surgery, the sensing device temporarily replaces the spacer and captures the images and the contact force distribution inside the knee joint prosthesis. It is connected to the external data receiver wirelessly through a 432 MHz data link, and the data is then sent to the workstation for processing. The signal processing method to analyze the instant and kinetic prosthesis pose from the image data has been investigated. Experiments on the prototype system show that the absolute reconstruction errors of the flexion-extension rotation angle (the pitch rotation of the femoral component around the horizontal long axis of the spacer), the internal–external rotation (the yaw rotation of the femoral component around the spacer vertical axis) and the mediolateral translation displacement between the centers of the femoral component and the spacer based on the image data are less than 1.73°, 1.08° and 1.55 mm, respectively. It provides a force balance measurement with error less than ±5 N. The experiments also show that kinetic pose reconstruction can be used to detect the surgery defection that cannot be detected by the force measurement or instant pose reconstruction.

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