Extension Limitation in Standing Affects Weight-Bearing Asymmetry After Unilateral Total Knee Arthroplasty

2010 ◽  
Vol 25 (2) ◽  
pp. 225-229 ◽  
Author(s):  
Kengo Harato ◽  
Takeo Nagura ◽  
Hideo Matsumoto ◽  
Toshiro Otani ◽  
Yoshiaki Toyama ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
Total Knee

Evaluation of the patellofemoral joint in total knee arthroplasty: Validation of the weight bearing merchant radiographic view

The Knee ◽  
2018 ◽  
Vol 25 (6) ◽  
pp. 1262-1271 ◽  
Author(s):  
Monther A. Gharaibeh ◽  
Elizabeth Monk ◽  
Darren B. Chen ◽  
Samuel J. MacDessi
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Patellofemoral Joint ◽  
Weight Bearing ◽  
Total Knee

In Vivo Tibiofemoral Contact Kinematics and Contact Forces During Dynamic Weight-Bearing Activities Following Total Knee Arthroplasty

2008 ◽  
Author(s):  
Kartik M. Varadarajan ◽  
Angela Moynihan ◽  
Darryl D’Lima ◽  
Clifford W. Colwell ◽  
Harry E. Rubash ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Computational Models ◽  
Imaging System ◽  
Weight Bearing ◽  
Contact Forces ◽  
Inverse Dynamic ◽  
Contact Kinematics ◽  
Total Knee

Accurate knowledge of in vivo articular contact kinematics and contact forces is required to quantitatively understand factors limiting life of total knee arthroplasty (TKA) implants, such as polyethylene component wear and implant loosening [1]. Determination of in vivo tibiofemoral contact forces has been a challenging issue in biomechanics. Historically, instrumented tibial implants have been used to measure tibiofemoral forces in vitro [2] and computational models involving inverse dynamic optimization have been used to estimate joint forces in vivo [3]. Recently, D’Lima et al. reported the first in vivo measurement of 6DOF tibiofemoral forces via an instrumented implant in a TKA patient [4]. However this technique does not provide a direct estimation of tibiofemoral contact forces in the medial and lateral compartments. Recently, a dual fluoroscopic imaging system has been used to accurately determine tibiofemoral contact locations on the medial and lateral tibial polyethylene surfaces [5]. The objective of this study was to combine the dual fluoroscope technique and the instrumented TKAs to determine the dynamic 3D articular contact kinematics and contact forces on the medial and lateral tibial polyethylene surfaces during functional activities.

scholarly journals Weight Bearing Activities change the Pivot Position after Total Knee Arthroplasty

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Philippe Moewis ◽  
Hagen Hommel ◽  
Adam Trepczynski ◽  
Leonie Krahl ◽  
Philipp von Roth ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
Total Knee

Inducible displacement of cemented tibial components ten years after total knee arthroplasty

2018 ◽  
Vol 100-B (2) ◽  
pp. 170-175 ◽  
Author(s):  
K. Lam Tin Cheung ◽  
B. A. Lanting ◽  
R. W. McCalden ◽  
X. Yuan ◽  
S. J. MacDonald ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Internal Rotation ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
Prospective Trial ◽  
Radiolucent Lines ◽  
Point Motion ◽  
Total Knee ◽  
One Year ◽  
Total Point

Aims The aim of this study was to evaluate the long-term inducible displacement of cemented tibial components ten years after total knee arthroplasty (TKA). Patients and Methods A total of 15 patients from a previously reported prospective trial of fixation using radiostereometric analysis (RSA) were examined at a mean of 11 years (10 to 11) postoperatively. Longitudinal supine RSA examinations were acquired at one week, one year, and two years postoperatively and at final follow-up. Weight-bearing RSA examinations were also undertaken with the operated lower limb in neutral and in maximum internal rotation positions. Maximum total point motion (MTPM) was calculated for the longitudinal and inducible displacement examinations (supine versus standing, standing versus internal rotation, and supine versus standing with internal rotation). Results All patients showed some inducible displacement. Two patients with radiolucent lines had greater mean standing-supine MTPM displacement (1.35; sd 0.38) compared with the remaining patients (0.68; sd 0.36). These two patients also had a greater mean longitudinal MTPM at ten years (0.64; sd 0.50) compared with the remaining patients (0.39; sd 0.13 mm). Conclusion Small inducible displacements in well-fixed cemented tibial components were seen ten years postoperatively, of a similar magnitude to that which has been reported for well-fixed components one to two years postoperatively. Greater displacements were found in components with radiolucent lines. Cite this article: Bone Joint J 2018;100-B:170–5.

scholarly journals In vivo contact kinematics and contact forces of the knee after total knee arthroplasty during dynamic weight-bearing activities

2008 ◽  
Vol 41 (10) ◽  
pp. 2159-2168 ◽  
Author(s):  
Kartik M. Varadarajan ◽  
Angela L. Moynihan ◽  
Darryl D’Lima ◽  
Clifford W. Colwell ◽  
Guoan Li
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
Contact Forces ◽  
Dynamic Weight ◽  
Contact Kinematics ◽  
Total Knee

Fixed versus mobile weight-bearing prosthesis in total knee arthroplasty

2012 ◽  
Vol 20 (12) ◽  
pp. 2519-2527 ◽  
Author(s):  
Hamidreza Shemshaki ◽  
Mohammad Dehghani ◽  
Mohammad Amin Eshaghi ◽  
Mahboobe Fereidan Esfahani
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
Total Knee

scholarly journals Association between changes in hip-knee-ankle angle and hindfoot alignment after total knee arthroplasty for varus knee osteoarthritis

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Naicheng Diao ◽  
Fei Yu ◽  
Bo Yang ◽  
Lifeng Ma ◽  
Heyong Yin ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Osteoarthritis ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
Linear Regression Analysis ◽  
Varus Knee ◽  
Hindfoot Alignment ◽  
Total Knee ◽  
American Orthopaedic ◽  
The Relationship

Abstract Background The change in hip-knee-ankle (HKA) angle after total knee arthroplasty (TKA) may cause an adjustment in hindfoot alignment (HFA). However, the relationship between the changes in HKA angle and HFA is still not well studied. This study aimed to investigate the association between HKA angle and hindfoot alignment changes after TKA for varus knee osteoarthritis. Methods A prospective study was carried out in which 108 patients with varus knee deformities were radiographically and clinically evaluated before and 3 months after TKA. The relationship of change in HFA with correction in HKA angle was investigated. Results The results showed that the HFA was adjusted significantly by 3 months after TKA (p < 0.001), along with improved American Orthopaedic Foot and Ankle Society (AOFAS) ankle hindfoot score (p < 0.001). Next, a univariate correlation and linear regression analysis showed that the change in HFA was weakly correlated with the change in HKA angle (r=-0.262, β=-0.14, 95 % CI: -0.23 to -0.04, P = 0.006). Further stratified analysis and interaction tests revealed that age has a distinct effect on the correlation between the changes in HFA and HKA angle. The correlation was dramatically greater in the group under 65 years (r=-0.474, β=-0.26, 95 % CI: -0.41 to -0.12, P = 0.001), whilst, no correlation was observed in those above 65 years old (r=-0.036, β=-0.02, 95 % CI: -0.14 to 0.11, P = 0.779). Conclusions Our findings indicated that correction of HKA after TKA tend to promote adjustment in the hindfoot alignment toward re-balance of the whole lower limb weight-bearing axis. However, this mechanism obviously weakens in elderly patients. Therefore, if apparent hindfoot deformity exists in these patients before TKA, more perioperative intervention is required for hindfoot adjustment, and even HKA undercorrection may be considered.

scholarly journals Non-weight-bearing short knee radiographs to evaluate coronal alignment before total knee arthroplasty

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Sheng Pan ◽  
Chaoran Huang ◽  
Xingchen Zhang ◽  
Ruxin Ruan ◽  
Ziwen Yan ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
Coronal Alignment ◽  
Total Knee

Indications Anteromedial Osteoarthritis

2015 ◽  
Author(s):  
John Goodfellow ◽  
John O'Connor ◽  
Hemant Pandit ◽  
Christopher Dodd ◽  
David Murray
Keyword(s):  
Total Knee Arthroplasty ◽  
Effective Treatment ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
The Other ◽  
Successful Outcome ◽  
Unicompartmental Arthroplasty ◽  
Articular Surfaces ◽  
Other Hand ◽  
Total Knee

Total knee arthroplasty is an effective treatment for most types of arthritis of the knee and requires little of the joint’s anatomy to be intact for a successful outcome. On the other hand, unicompartmental arthroplasty can only succeed if the rest of the knee is functionally intact before surgery. We will discuss, first, the pathology of osteoarthritis (OA) of the knee and then how to ascertain, before operating, that the ligaments are all functionally normal and the retained articular surfaces capable of resuming their weight-bearing role.

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