scholarly journals Influence of Lower Limb Alignment Changes before and after Total Knee Arthroplasty on Kinematic Characteristics during Walking

2020 ◽  
Vol 35 (2) ◽  
pp. 283-288
Author(s):  
Seiji DOI ◽  
Satoru SHIBATA ◽  
Tomonori YAMAMOTO ◽  
Shenglin MU
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Lower Limb ◽  
Limb Alignment ◽  
Lower Limb Alignment ◽  
Kinematic Characteristics ◽  
Before And After ◽  
Total Knee

Accuracy of Lower Limb Alignment in Patients with Total Knee Arthroplasty in Fajr Hospital, Tehran, 2008-2013

2014 ◽  
Vol 11 (2) ◽  
pp. 807-813
Author(s):  
M. Shahrezaee ◽  
M. Jabalameli ◽  
A. Noori ◽  
S.R. Sharifzadeh ◽  
M. Setareh ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Lower Limb ◽  
Limb Alignment ◽  
Lower Limb Alignment ◽  
Total Knee

scholarly journals Spinal Flexibility Is an Important Factor for Improvement in Spinal and Knee Alignment after Total Knee Arthroplasty: Evaluation Using a Whole Body EOS System

2020 ◽  
Vol 9 (11) ◽  
pp. 3498
Author(s):  
Seong Chan Kim ◽  
Joo Sung Kim ◽  
Han Gyeol Choi ◽  
Tae Woo Kim ◽  
Yong Seuk Lee
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Lower Limb ◽  
Whole Body ◽  
Limb Alignment ◽  
Lower Limb Alignment ◽  
Spinal Flexibility ◽  
Flexion Extension ◽  
Total Knee

The purposes of this study were (1) to evaluate the relationship between lumbosacral flexibility and the effects of total knee arthroplasty (TKA) on whole-body alignment; and (2) to determine the prerequisites of the adjacent joints for successful TKA. A total of 116 patients (156 cases) who had whole-body X-ray and flexion-extension lumbar radiograph available were enrolled. For the sagittal alignment evaluation, hip–knee–ankle (HKA) angle, pelvic tilt (PT), sacral slope (SS), lumbar lordosis (LL), thoracic kyphosis (TK), and C7 plumb line-sacrum distance (SVA) were evaluated on the whole-body radiographs. Lumbar flexibility (LF) was evaluated using the flexion-extension lumbar radiographs, and pelvic flexibility (PF) was evaluated using the pelvic incidence (PI). The disparities in the knee joint between postoperative passive motion and weight-bearing posture were assessed. LF was significantly correlated with ΔLL and ΔSVA (LL: p = 0.039, SVA: p = 0.040; Pearson correlation coefficient (PCC): −0.206 and 0.205, respectively). There were correlations between PF and ΔSS (p < 0.001, PCC: −0.362), and between the disparity and LF (p = 0.005, PCC = −0.275). Linear regression analysis demonstrated that LF was significantly associated with the presence of disparity (p = 0.005, β = −0.205). LF is an important factor for improved spinal and lower limb alignment after TKA. Additionally, reduced LF may result in knee joint disparity between passive extension and standing extension status. Therefore, surgeons should consider spinopelvic alignment, including lower limb alignment preoperatively, to be able to predict possible changes in whole-body alignment following TKA.

scholarly journals One-Stage Femoral Osteotomy and Computer-Assisted Navigation Total Knee Arthroplasty for Osteoarthritis in a Patient with Femoral Subtrochanteric Fracture Malunion

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
C. H. Jason Fan
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Subtrochanteric Fracture ◽  
Computer Assisted ◽  
Limb Alignment ◽  
Lower Limb Alignment ◽  
Assisted Navigation ◽  
Osteoarthritis Of Knee ◽  
Femoral Deformity ◽  
Total Knee

Extra-articular femoral deformity in total knee arthroplasty (TKA) is realigned by either intra-articular correction or extra-articular osteotomy. The more distant the deformity is away from knee joint, the more likely it is corrected by the former method. No report described the use of antegrade cephalomedullary femoral nail to fix the osteotomy followed by computer-assisted navigation TKA. This report described the unusual use of this method to manage a 64-year-old man with femoral subtrochanteric fracture malunion and osteoarthritis of knee. He demonstrated a satisfactory functional outcome and good lower limb alignment.

Lower Limb Biomechanics in Individuals With Knee Osteoarthritis Before and After Total Knee Arthroplasty Surgery

2013 ◽  
Vol 28 (6) ◽  
pp. 994-999 ◽  
Author(s):  
Pazit Levinger ◽  
Hylton B. Menz ◽  
Adam D. Morrow ◽  
Julian A. Feller ◽  
John R. Bartlett ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Osteoarthritis ◽  
Knee Arthroplasty ◽  
Lower Limb ◽  
Before And After ◽  
Total Knee ◽  
Knee Arthroplasty Surgery ◽  
Arthroplasty Surgery

scholarly journals Postoperative laxity of the lateral soft tissue is largely negligible in total knee arthroplasty for varus osteoarthritis

2021 ◽  
Vol 29 (1) ◽  
pp. 230949902110020
Author(s):  
Seikai Toyooka ◽  
Hironari Masuda ◽  
Nobuhiro Nishihara ◽  
Takashi Kobayashi ◽  
Wataru Miyamoto ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Knee Arthroplasty ◽  
Mechanical Axis ◽  
Varus Deformity ◽  
Varus Knee ◽  
Before And After ◽  
Knee Deformity ◽  
Varus Stress ◽  
Total Knee

Purpose: To evaluate the integrity of lateral soft tissue in varus osteoarthritis knee by comparing the mechanical axis under varus stress during navigation-assisted total knee arthroplasty before and after compensating for a bone defect with the implant. Methods: Sixty-six knees that underwent total knee arthroplasty were investigated. The mechanical axis of the operated knee was evaluated under manual varus stress immediately after knee exposure and after navigation-assisted implantation. The correlation between each value of the mechanical axis and degree of preoperative varus deformity was compared by regression analysis. Results: The maximum mechanical axis under varus stress immediately after knee exposure increased in proportion to the degree of preoperative varus deformity. Moreover, the maximum mechanical axis under varus stress after implantation increased in proportion to the degree of preoperative varus deformity. Therefore, the severity of varus knee deformity leads to a progressive laxity of the lateral soft tissue. However, regression coefficients after implantation were much smaller than those measured immediately after knee exposure (0.99 vs 0.20). Based on the results of the regression formula, the postoperative laxity of the lateral soft tissue was negligible, provided that an appropriate thickness of the implant was compensated for the bone and cartilage defect in the medial compartment without changing the joint line. Conclusion: The severity of varus knee deformity leads to a progressive laxity of the lateral soft tissue. However, even if the degree of preoperative varus deformity is severe, most cases may not require additional procedures to address the residual lateral laxity.

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