Principal Component Analysis of Knee Joint Differences Between Bilateral and Unilateral Total Knee Replacement Patients During Level Walking

2021 ◽  
Author(s):  
Derek Yocum ◽  
Jeffrey Reinbolt ◽  
Joshua T. Weinhandl ◽  
Tyler Standifird ◽  
Eugene Fitzhugh ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Knee Joint ◽  
Total Knee Replacement ◽  
Knee Replacement ◽  
Frontal Plane ◽  
Principal Component ◽  
Component Analysis ◽  
Level Walking ◽  
Peak Knee ◽  
Total Knee

Abstract Many unilateral total knee replacement (TKR) patients will need a contralateral TKR. Differences in knee joint biomechanics between bilateral patients and unilateral patients are not well established. The purpose of this study was to examine knee joint differences in level walking between bilateral and unilateral patients, and asymptomatic controls, using principal component analysis. Knee joints of 1st replaced limbs of 15 bilateral patients (69.40±5.04 years), 15 replaced limbs of unilateral patients (66.47±6.15 years), and 15 asymptomatic controls (63.53±9.50 years) were analyzed during level walking. Principal component analysis examined knee joint sagittal- and frontal-plane kinematics and moments, and vertical GRF. A one-way analysis of variance analyzed differences between principal component scores of each group. TKR patients exhibited more flexed and abducted knees throughout stance, decreased sagittal knee range of motion (ROM), increased early-stance adduction ROM, decreased loading-response knee extension and push-off knee flexion moments, decreased loading-response and push-off peak knee abduction moment (KAbM), increased KAbM at midstance, increased midstance vertical ground reaction force (GRF), and decreased loading-response and push-off vertical GRF. Additionally, bilateral patients exhibited reduced sagittal knee ROM, increased adduction ROM, decreased sagittal knee moments throughout stance, decreased KAbM throughout stance, an earlier loading-response peak vertical GRF, and a decreased push-off vertical GRF, compared to unilateral patients. TKR patients, especially bilateral patients had stiff knee motion in the sagittal-plane, increased frontal-plane joint laxity, and a quadriceps avoidance gait.

scholarly journals Competitive and Recreational Running Kinematics Examined Using Principal Components Analysis

Healthcare ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1321
Author(s):  
Wenjing Quan ◽  
Huiyu Zhou ◽  
Datao Xu ◽  
Shudong Li ◽  
Julien S. Baker ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Principal Components ◽  
Sagittal Plane ◽  
Three Dimensional ◽  
Frontal Plane ◽  
Principal Component ◽  
Component Analysis ◽  
Ankle Inversion ◽  
Motion System ◽  
Recreational Runners

Kinematics data are primary biomechanical parameters. A principal component analysis (PCA) of waveforms is a statistical approach used to explore patterns of variability in biomechanical curve datasets. Differences in experienced and recreational runners’ kinematic variables are still unclear. The purpose of the present study was to compare any differences in kinematics parameters for competitive runners and recreational runners using principal component analysis in the sagittal plane, frontal plane and transverse plane. Forty male runners were divided into two groups: twenty competitive runners and twenty recreational runners. A Vicon Motion System (Vicon Metrics Ltd., Oxford, UK) captured three-dimensional kinematics data during running at 3.3 m/s. The principal component analysis was used to determine the dominating variation in this model. Then, the principal component scores retained the first three principal components and were analyzed using independent t-tests. The recreational runners were found to have a smaller dorsiflexion angle, initial dorsiflexion contact angle, ankle inversion, knee adduction, range motion in the frontal knee plane and hip frontal plane. The running kinematics data were influenced by running experience. The findings from the study provide a better understanding of the kinematics variables for competitive and recreational runners. Thus, these findings might have implications for reducing running injury and improving running performance.

On the role of knee joint in balance control and postural strategies: Effects of total knee replacement in elderly subjects with knee osteoarthritis

2010 ◽  
Vol 32 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Gérome C. Gauchard ◽  
Guy Vançon ◽  
Philippe Meyer ◽  
Didier Mainard ◽  
Philippe P. Perrin
Keyword(s):  
Knee Joint ◽  
Total Knee Replacement ◽  
Knee Osteoarthritis ◽  
Knee Replacement ◽  
Balance Control ◽  
Elderly Subjects ◽  
Total Knee

scholarly journals Effect of femoral posterior condyle offset on knee joint function after total knee replacement: a network meta-analysis and a sequential retrospective cohort study

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Yimin Zhang ◽  
Jun Wang ◽  
Miao Zhang ◽  
Yun Xu
Keyword(s):  
Knee Joint ◽  
Total Knee Replacement ◽  
Knee Replacement ◽  
Meta Analysis ◽  
Flexion Contracture ◽  
Functional Score ◽  
Knee Score ◽  
Joint Function ◽  
Posterior Condyle ◽  
Total Knee

Abstract Background This study was conducted with the aim to compare the effect of posterior condyle offset (PCO) changes on knee joint function of patients following total knee replacement (TKR). Methods Electronic and manual searches were performed in the PubMed, Embase, and Cochrane Library databases from inception to September 2019. Network meta-analysis combined direct and indirect evidence to assess the weighted mean difference (WMD) and surface under the cumulative ranking curves (SUCRA) of different PCO changes (PCO ≤ − 2 mm, − 2 mm < PCO < 0 mm, 0 mm ≤ PCO < 2 mm and PCO ≥ 2 mm) on knee joint function after TKR. Then 103 OA patients undergoing unilateral TKR were included and the effect of PCO on the postoperative knee function was examined. Results Totally, 5 cohort studies meeting the inclusion criteria were enrolled in this analysis. The results of meta-analysis showed that patients with 0 mm ≤ PCO < 2 mm after TKR had a better recovery of joint function (flexion contracture: 28.67%; KS functional score: 78.67%; KS knee score: 75.00%) than the remaining three groups. However, the knee flexion (77.00%) of patients with PCO ≤ − 2 mm after TKR was superior to the other three groups. Retrospective study also revealed a significant correlation between PCO changes and the flexion contracture, further flexion and KS functional score of patients after TKR, in which each functional knee score of patients with 0 mm ≤ PCO < 2 mm was better than the others. Conclusion These findings suggest a close correlation between PCO magnitude and knee joint function after TKR and that 0 mm ≤ PCO < 2 mm is superior to other changes for joint function after TKR.

scholarly journals RETROSPECTIVE ANALYSIS OF FUNCTIONAL OUTCOME OF TOTAL KNEE REPLACEMENT IN RURAL TEACHING SETUP

2021 ◽  
Vol 9 (12) ◽  
pp. 222-226
Author(s):  
Ketas Mahajan ◽  
Keyword(s):  
Knee Joint ◽  
Total Knee Replacement ◽  
Retrospective Analysis ◽  
Knee Replacement ◽  
Joint Replacement ◽  
Observation Data ◽  
Knee Joint Replacement ◽  
Total Knee ◽  
Set Up ◽  
Rural Teaching

Background:Indian population is mainly residing in two areas- urban and rural. The literature has shown consistent results following knee joint replacement surgeries, however these studies have been done in highly efficient and equipped hospitals in urban areas. Aim: The aim of this study was to compare outcome at a rural set-up with those at a high-end teaching or corporate hospital in urban set-up from published literature. Materials and Methods: This study was an observational and retrospective analysis. Observation data was collected from January, 2020 and April, 2021. This study included follow-up of 60 total knee joint replacements. Results: In our study of total knee joint replacement surgeries in rural teaching set- up, we achieved 95.39% results (excellent) while the remaining 4.61% results were good. Conclusion: This study confirmed that results of total knee replacement are comparable to any other highly well equipped urban center, if all basic surgical principles including aseptic precautions are stringently followed-up. Further the clinical outcomes in our cases was more surgeon dependent rather than technology dependent as all surgeries were performed by one single surgeon.

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