Optimal Position for the Artifical Patella During Resurfacing to Decrease Stress and Avoid Pre-Prosthetic Patellar Fracture

2010 ◽  
Author(s):  
Kwang Won Choi ◽  
Farid Amirouche ◽  
Mark H. Gonzalez ◽  
Wayne Goldstein
Keyword(s):  
United States ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
The United States ◽  
Patellar Fracture ◽  
Optimal Position ◽  
Ideal Position ◽  
Total Knee ◽  
Patellar Fractures ◽  
The Ideal

Total knee arthroplasty (TKA) is known to be an excellent solution to patients experiencing considerable pain at the joint and difficulty flexing and extending their knee. Unfortunately, after surgery, cases of peri-prosthetic patellar fracture are possible. The prevalence of this fracture ranges from 0.11% to 21.4% for the over 400,000 TKAs that are conducted in the United States every year and therefore, patellar fracture can become a serious concern. The factors that lead to this are several and many researchers are still investigating this problem. This research shows that the position of the surgically inserted artificial patella, also referred to as the patellar button, influences occurrence of patellar fractures and attempts to derive the ideal position for the button to reduce the risk of patellar fracture.

The Adjustment of the Rotational Alignment of the Distal End of the Extramedullary Guide to the Anteroposterior Axis of the Proximal Tibia in Total Knee Arthroplasty

2021 ◽  
Author(s):  
Hideki Mizu-uchi ◽  
Hidehiko Kido ◽  
Tomonao Chikama ◽  
Kenta Kamo ◽  
Satoshi Kido ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Navigation System ◽  
Proximal Tibia ◽  
Rotational Alignment ◽  
Coronal Alignment ◽  
Ideal Position ◽  
Total Knee ◽  
Alignment Guide ◽  
The Ideal

AbstractThe optimal placement within 3 degrees in coronal alignment was reportedly achieved in only 60 to 80% of patients when using an extramedullary alignment guide for the tibial side in total knee arthroplasty (TKA). This probably occurs because the extramedullary alignment guide is easily affected by the position of the ankle joint which is difficult to define by tibial torsion. Rotational direction of distal end of the extramedullary guide should be aligned to the anteroposterior (AP) axis of the proximal tibia to acquire optimal coronal alignment in the computer simulation studies; however, its efficacy has not been proven in a clinical setting. The distal end of the guide can be overly displaced from the ideal position when using a conventional guide system despite the alignment of the AP axis to the proximal tibia. This study investigated the effect of displacement of the distal end of extramedullary guide relative to the tibial coronal alignment while adjusting the rotational alignment of the distal end to the AP axis of the proximal tibia in TKA. A total of 50 TKAs performed in 50 varus osteoarthritic knees using an image-free navigation system were included in this study. The rotational alignment of the proximal side of the guide was adjusted to the AP axis of the proximal tibia. The position of the distal end of the guide was aligned to the center of the ankle joint as viewed from the proximal AP axis (ideal position) and as determined by the navigation system. The tibial intraoperative coronal alignments were recorded as the distal end was moved from the ideal position at 3-mm intervals. The intraoperative alignments were 0.5, 0.9, and 1.4 degrees in valgus alignment with 3-, 6-, and 9-mm medial displacements, respectively. The intraoperative alignments were 0.7, 1.2, and 1.7 degrees in varus alignment with 3-, 6-, and 9-mm lateral displacements, respectively. In conclusion, the acceptable tibial coronal alignment (within 2 degrees from the optimal alignment) can be achieved, although some displacement of the distal end from the ideal position can occur after the rotational alignment of the distal end of the guide is adjusted to the AP axis of the proximal tibia.

scholarly journals The Epidemiology of Revision Total Knee Arthroplasty in the United States

2009 ◽  
Vol 468 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Kevin J. Bozic ◽  
Steven M. Kurtz ◽  
Edmund Lau ◽  
Kevin Ong ◽  
Vanessa Chiu ◽  
...  
Keyword(s):  
United States ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
The United States ◽  
Revision Total Knee Arthroplasty ◽  
Total Knee

scholarly journals Projected increase in total knee arthroplasty in the United States – an alternative projection model

2017 ◽  
Vol 25 (11) ◽  
pp. 1797-1803 ◽  
Author(s):  
M.C.S. Inacio ◽  
E.W. Paxton ◽  
S.E. Graves ◽  
R.S. Namba ◽  
S. Nemes
Keyword(s):  
United States ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
The United States ◽  
Projection Model ◽  
Total Knee

scholarly journals The Epidemiology of Revision Total Knee Arthroplasty in the United States

2009 ◽  
Vol 24 (2) ◽  
pp. e49 ◽  
Author(s):  
Kevin Bozic ◽  
Steven M. Kurtz ◽  
Edmund Lau ◽  
Kevin Ong ◽  
Thomas P. Vail ◽  
...  
Keyword(s):  
United States ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
The United States ◽  
Revision Total Knee Arthroplasty ◽  
Total Knee

The Impact of Diabetes on Perioperative Patient Outcomes after Total Hip and Total Knee Arthroplasty in the United States

2008 ◽  
Vol 23 (2) ◽  
pp. 322-323
Author(s):  
Michael P. Bolognesi ◽  
Milford H. Marchant, Jr. ◽  
Nicholas A. Viens ◽  
Chad Cook ◽  
Ricardo Pietrobon ◽  
...  
Keyword(s):  
United States ◽  
Total Knee Arthroplasty ◽  
Patient Outcomes ◽  
Knee Arthroplasty ◽  
The United States ◽  
Total Hip ◽  
Total Knee ◽  
The Impact

scholarly journals Racial/Ethnic Disparities in Physical Function Before and After Total Knee Arthroplasty Among Women in the United States

2020 ◽  
Vol 3 (5) ◽  
pp. e204937 ◽  
Author(s):  
Alyson M. Cavanaugh ◽  
Mitchell J. Rauh ◽  
Caroline A. Thompson ◽  
John Alcaraz ◽  
William M. Mihalko ◽  
...  
Keyword(s):  
United States ◽  
Total Knee Arthroplasty ◽  
Physical Function ◽  
Knee Arthroplasty ◽  
Ethnic Disparities ◽  
The United States ◽  
Before And After ◽  
Total Knee ◽  
Racial Ethnic

scholarly journals The primary total knee arthroplasty: a global analysis

2020 ◽  
Author(s):  
Jiaxiang Gao ◽  
Dan Xing ◽  
Shengjie Dong ◽  
Jianhao Lin
Keyword(s):  
United States ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
The United States ◽  
Current Status ◽  
Global Trends ◽  
Balanced Development ◽  
Total Knee ◽  
Number Of Publications ◽  
Visualized Study

Abstract Background The use of total knee arthroplasty (TKA) in treatment of chronic degenerative pathologies of the knee has boasted of an experience of 50 years. The aim of this bibliometric and visualized study is to comprehensively examine the current status and global trends of TKA research. Methods Publications related to TKA research from 2010 to 2019 were retrieved from Web of Science database, and then analyzed through bibliometric methodology. As for the visualized study, the software VOS viewer was utilized for bibliographic coupling, coauthorship, cociation, and co-occurrence analysis, along with further simulation of publication trends in this field. Results A total of 8631 publications were eventually included. The number of publications tends to increased annually over the worldwide. The United States was the pioneer which has made tremendous contribution, with the most publications and citations, as well as the highest H-index. The JOURNAL OF ARTHROPLASTY has published most papers, while CLINICAL ORTHOPAEDICS AND RELATED RESEARCH has the highest citation frequency. Hospital for Special Surgery have made the greatest contribution when total publication number and coauthorship were taken together. Studies could be divided into five clusters: “alignment study”, “revision TKA study”, “complication study”, “rehabilitation study”, and “perioperative management study”, which have a trend of balanced development in this field. Conclusions There will be an increasing number of publications on TKA research according to the current global trends, and the United States maintained the leadership in this area. Additionally, a trend of balanced development may exist in the field of TKA research, accompanied with inherent changes of hotspots in each cluster.

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