Post-operative Implanted Knee Kinematics Prediction in Total Knee Arthroscopy Using Clinical Big Data

2016 ◽  
pp. 405-412 ◽  
Author(s):  
Belayat Md. Hossain ◽  
Manabu Nii ◽  
Takatoshi Morooka ◽  
Makiko Okuno ◽  
Shiichi Yoshiya ◽  
...  
Keyword(s):  
Big Data ◽  
Knee Arthroscopy ◽  
Knee Kinematics ◽  
Total Knee

Patient function after a posterior stabilizing total knee arthroplasty: cam–post engagement and knee kinematics

2008 ◽  
Vol 16 (3) ◽  
pp. 290-296 ◽  
Author(s):  
Jeremy F. Suggs ◽  
George R. Hanson ◽  
Sang Eun Park ◽  
Angela L. Moynihan ◽  
Guoan Li
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Kinematics ◽  
Total Knee

Effect of Gait on Patellofemoral Mechanics

2008 ◽  
Author(s):  
Jeffrey E. Bischoff ◽  
Justin S. Hertzler
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Clinical Studies ◽  
Patellofemoral Joint ◽  
Knee Kinematics ◽  
Component Design ◽  
Total Knee ◽  
The Impact ◽  
Reconstructed Knee

Computational modeling of the reconstructed knee is an important tool in designing components for maximum functionality and life. Utilization of boundary conditions consistent with in vivo gait loading in such models enables predictions of knee kinematics and polyethylene damage [1–4], which can then be used to optimize component design. Several recent clinical studies have focused on complications associated with the patellofemoral joint [5–6], highlighting the need to better understand the mechanics of this compartment of total knee arthroplasty (TKA). This study utilizes a computational model to characterize the impact of gait loading on the mechanics of the patella in TKA.

scholarly journals Incidence and predictors of total knee arthroplasty following knee arthroscopy

2018 ◽  
Vol 15 (1) ◽  
pp. 32-35
Author(s):  
Tristan Camus ◽  
Jiho Han ◽  
Feroz Osmani ◽  
Norman Scott ◽  
William J. Long
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Arthroscopy ◽  
Total Knee

Anatomic-like polyethylene insert could improve knee kinematics after total knee arthroplasty — A computational assessment

2011 ◽  
Vol 26 (6) ◽  
pp. 612-619 ◽  
Author(s):  
Yu-Liang Liu ◽  
Kun-Jhih Lin ◽  
Chang-Hung Huang ◽  
Wen-Chuan Chen ◽  
Chih-Hui Chen ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Kinematics ◽  
Polyethylene Insert ◽  
Total Knee

scholarly journals In VivoHealthy Knee Kinematics during Dynamic Full Flexion

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Satoshi Hamai ◽  
Taka-aki Moro-oka ◽  
Nicholas J. Dunbar ◽  
Hiromasa Miura ◽  
Yukihide Iwamoto ◽  
...  
Keyword(s):  
Knee Flexion ◽  
Knee Kinematics ◽  
The Other ◽  
Medial Compartment ◽  
Knee Flexion Angle ◽  
Knee Prostheses ◽  
Healthy Knee ◽  
Total Knee ◽  
Full Flexion ◽  
2D Model

Healthy knee kinematics during dynamic full flexion were evaluated using 3D-to-2D model registration techniques. Continuous knee motions were recorded during full flexion in a lunge from 85° to 150°. Medial and lateral tibiofemoral contacts and femoral internal-external and varus-valgus rotations were analyzed as a function of knee flexion angle. The medial tibiofemoral contact translated anteroposteriorly, but remained on the center of the medial compartment. On the other hand, the lateral tibiofemoral contact translated posteriorly to the edge of the tibial surface at 150° flexion. The femur exhibited external and valgus rotation relative to the tibia over the entire activity and reached 30° external and 5° valgus rotations at 150° flexion. Kinematics’ data during dynamic full flexion may provide important insight as to the designing of high-flexion total knee prostheses.

In Vivo Comparison of Knee Kinematics Before and After High-Flexion Posterior Cruciate-Retaining Total Knee Arthroplasty

2010 ◽  
Vol 25 (6) ◽  
pp. 964-969 ◽  
Author(s):  
Atsushi Kitagawa ◽  
Nobuhiro Tsumura ◽  
Takaaki Chin ◽  
Kazuyoshi Gamada ◽  
Scott A. Banks ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Kinematics ◽  
Cruciate Retaining ◽  
High Flexion ◽  
Before And After ◽  
Total Knee

Cyclic and Residual Stresses Generated in the UHMWPE Component of Total Knee Replacements During the Walking Cycle

1999 ◽  
Author(s):  
Raghu N. Natarajan
Keyword(s):  
Residual Stresses ◽  
Failure Modes ◽  
Contact Region ◽  
Three Dimensional ◽  
Knee Kinematics ◽  
Element Model ◽  
Clear Understanding ◽  
Dimensional Finite Element ◽  
Total Knee ◽  
Three Dimensional Finite Element

Abstract Fatigue due to cyclic stresses is one of the predominant failure modes seen in retrieved tibial polyethylene components. There is no clear understanding of the influence of knee kinematics on wear seen in retrieved samples. Magnitude, direction and location of the contact load at the tibial surface were taken from the measurement obtained from gait analysis of a patient with a total knee replacement and was input into a three dimensional finite element model of a tibial component. The analyses showed that stress fluctuations and stress reversals occur both on the surface and just below the surface in the posterior region of the component. Residual stresses were produced due to plastic deformation in the posterior contact region of the component.

Total Knee Arthroplasty following Knee Arthroscopy in Patients over 50

2021 ◽  
Author(s):  
J. Stewart Buck ◽  
Susan M. Odum ◽  
Jonathan K. Salava ◽  
David M. Macknet ◽  
Thomas K. Fehring ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Arthroscopy ◽  
Administrative Database ◽  
Univariable Analysis ◽  
Digital Radiographs ◽  
Multivariable Regression ◽  
Total Knee ◽  
Arthroscopic Knee ◽  
And Control

AbstractThe purpose of this study was to evaluate the conversion rate of knee arthroscopy to ipsilateral total knee arthroplasty (TKA) within 2 years in patients aged 50 or older at the time of arthroscopy. The administrative database from a large, physician-owned orthopaedic practice (>100 surgeons) was queried to identify patients over the age of 50 who had undergone arthroscopic knee surgery between January 1, 2006 and January 2, 2015. The subset of patients who converted to TKA within 2 years after knee arthroscopy was identified and matched by age and sex to a control population that did not convert to TKA. Rates of conversion to TKA were calculated. Prearthroscopic digital radiographs were reviewed and Kellgren–Lawrence (KL) grades were compared among case and control populations. Univariable analyses and multivariable regression analysis were performed. Eight hundred seven of 16,061 (5.02%) patients aged 50 or older were converted to TKA within 2 years following ipsilateral knee arthroscopy. In univariable analysis, the rate of conversion to TKA in patients aged between 50 and 54 was 2.94%, compared with 4.44% in patients aged between 55 and 64, and 8.32% in patients 65 or older (p < 0.0001). Female sex was associated with a higher rate of conversion to TKA in univariable analysis (5.93 vs. 4.02% in males, p < 0.0001). KL grades were higher among patients who converted to TKA compared with those who did not (p < 0.0001). In a multivariable regression model controlling for age, sex, and KL grade, only increased KL grade was associated with increased odds of conversion to TKA. In the appropriately selected older patient, the risk of conversion to TKA within 2 years of knee arthroscopy is low (∼5%). Patients with KL grade 2 or higher at the time of arthroscopy should be counseled on the increased odds of early conversion to TKA.

scholarly journals Assessing the adequacy of procedure-specific consent forms in orthopaedic surgery against current methods of operative consent

2010 ◽  
Vol 92 (3) ◽  
pp. 246-249 ◽  
Author(s):  
Andrew W Barritt ◽  
Laura Clark ◽  
Victoria Teoh ◽  
Adam MM Cohen ◽  
Paul A Gibb
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Orthopaedic Surgery ◽  
Knee Arthroscopy ◽  
Information Provision ◽  
Prospective Audit ◽  
Consent Forms ◽  
Total Knee ◽  
Audit Cycle ◽  
British Orthopaedic Association

INTRODUCTION This is an audit of patient understanding following their consent for orthopaedic procedures and uses information on new Orthoconsent forms endorsed by the British Orthopaedic Association as the set standard. The objectives were to: (i) assess whether patients& understanding of knee arthroscopy (KA) and total knee replacement (TKR) at the point of confirming their consent reaches the set standard; and (ii) to ascertain whether issuing procedure-specific Orthoconsent forms to patients can improve this understanding. SUBJECTS AND METHODS This was a prospective audit using questionnaires consisting of 26 (for KA) or 35 (for TKR) questions based on the appropriate Orthoconsent form in a department of orthopaedic surgery within a UK hospital. Participants were 100 patients undergoing KA and 60 patients undergoing TKR between February and July 2008. Participants were identified from sequential operating lists and all had capacity to give consent. During the first audit cycle, consent was discussed with the patient and documented on standard yellow NHS Trust approved generic consent forms. During the second audit cycle, patients were additionally supplied with the appropriate procedure-specific consent form downloaded from < www.orthoconsent.com > which they were required to read at home and sign on the morning of surgery. RESULTS Knee arthroscopy patients consented with only the standard yellow forms scored an average of 56.7%, rising to 80.5% with use of Orthoconsent forms. Similarly, total knee replacement patients& averages rose from 57.6% to 81.6%. CONCLUSIONS Providing patients with an Orthoconsent form significantly improves knowledge of their planned procedure as well as constituting a more robust means of information provision and consent documentation.

scholarly journals Prior knee arthroscopy effects on subsequent total knee arthroplasty

Medicine ◽  
2020 ◽  
Vol 99 (17) ◽  
pp. e19844
Author(s):  
Feng Hu ◽  
Xulin Chen ◽  
Yingjie Wu ◽  
Wei Liu
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Arthroscopy ◽  
Total Knee
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