scholarly journals Patella Eversion in Knee Arthroplasty: Does it lead to an adverse outcome?

2017 ◽  
Vol 5 (5_suppl5) ◽  
pp. 2325967117S0016
Author(s):  
Michael Reid ◽  
Grant Booth ◽  
Riaz JK Khan ◽  
Greg Janes
Keyword(s):  
Total Knee Arthroplasty ◽  
Functional Outcome ◽  
Knee Arthroplasty ◽  
Patella Tendon ◽  
Medial Parapatellar Approach ◽  
Pain Scores ◽  
Significant Difference ◽  
Total Knee ◽  
One Year ◽  
Medial Parapatellar

Objectives: Proponents of minimally invasive knee replacements argue that retracting rather than everting the patella results in quicker postoperative recovery and improved function compared to the standard approach. We aimed to investigate this in a group of patients undergoing knee arthroplasty using a standard medial parapatellar approach. Methods: In a prospective randomized double-blinded study sixty-eight patients undergoing total knee arthroplasty through a standard medial parapatellar approach were assigned to either retraction or eversion of the patella. An independent observer assessed the flexion and secondary outcome measures of Oxford knee score, the SF12 score, visual analog pain scores, range of motion data and radiographs preoperatively, at three months and at one-year post surgery. Results: Early (3 month) follow-up showed no significant difference between eversion and subluxation in flexion (mean and 95%CI, 101°± 5.37 vs 102°±4.14) Oxford knee scores (25±3 vs 27±2.69), SF12 or visual analog pain scores (1.9±0.54 vs 1.1±0.44). A statistically significant improvement in extension was found (-3.9°±1.12 vs 2.0°±0.91 (p=0.034)) but this was not thought to be clinically significant. There was no difference in any outcomes at one year. There was a significant difference in implant malpositioning in the subluxation group with increased percentage lateral tibial overhang (0.45±0.39 vs 1.84±0.82 (p=0.005)) but this did not correlate with functional outcome. There was no statistical difference in alignment between the two groups (178.29°±0.84 vs 178.18°±0.78). There was no difference between the two groups in Insall-Salvati Ratio (1.15±0.06 vs 1.12±0.06) although there was a correlation to a reduction in the ratio and functional outcome. There were two partial divisions of the patella tendon in the retraction group, but no patella related complications in the eversion group. Conclusion: Retracting rather than everting the patella during total knee arthroplasty results in no significant clinical benefit in the early to medium term. There is no increase in patella tendon shortening as a result of eversion rather than subluxation.

Venous thromboembolism after total knee arthroplasty is associated with a worse functional outcome at one year

2021 ◽  
Vol 103-B (7) ◽  
pp. 1254-1260
Author(s):  
Lorenzo Calabro ◽  
Nick D. Clement ◽  
Deborah MacDonald ◽  
James T. Patton ◽  
Colin R. Howie ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Venous Thromboembolism ◽  
Functional Outcome ◽  
Knee Arthroplasty ◽  
Oxford Knee Score ◽  
Significant Independent Predictor ◽  
Total Knee ◽  
Five Dimension ◽  
One Year

Aims The primary aim of this study was to assess whether non-fatal postoperative venous thromboembolism (VTE) within six months of surgery influences the knee-specific functional outcome (Oxford Knee Score (OKS)) one year after total knee arthroplasty (TKA). Secondary aims were to assess whether non-fatal postoperative VTE influences generic health and patient satisfaction at this time. Methods A study of 2,393 TKAs was performed in 2,393 patients. Patient demographics, comorbidities, OKS, EuroQol five-dimension score (EQ-5D), and Forgotten Joint Score (FJS) were collected preoperatively and one year postoperatively. Overall patient satisfaction with their TKA was assessed at one year. Patients with VTE within six months of surgery were identified retrospectively and compared with those without. Results A total of 37 patients (1.5%) suffered a VTE and were significantly more likely to have associated comorbidities of stroke (p = 0.026), vascular disease (p = 0.026), and kidney disease (p = 0.026), but less likely to have diabetes (p = 0.046). In an unadjusted analysis, patients suffering a VTE had a significantly worse postoperative OKS (difference in mean (DIM) 4.8 (95% confidence interval (CI) 1.6 to 8.0); p = 0.004) and EQ-5D (DIM 0.146 (95% CI 0.059 to 0.233); p = 0.001) compared with patients without a VTE. After adjusting for confounding variables VTE remained a significant independent predictor associated with a worse postoperative OKS (DIM -5.4 (95% CI -8.4 to -2.4); p < 0.001), and EQ-5D score (DIM-0.169 (95% CI -0.251 to -0.087); p < 0.001). VTE was not independently associated with overall satisfaction after TKA (odds ratio 0.89 (95% CI 0.35 to 2.07); p = 0.717). Conclusion Patients who had a VTE within six months of their TKA had clinically significantly worse knee-specific outcome (OKS) and general health (EQ-5D) scores one year postoperatively, but the overall satisfaction with their TKA was similar to those patients who did not have a VTE. Cite this article: Bone Joint J 2021;103-B(7):1254–1260.

Comparison of Midvastus and Medial Parapatellar Approach for Total Knee Arthroplasty

2005 ◽  
Vol 40 (7) ◽  
pp. 902 ◽  
Author(s):  
Moo Ho Song ◽  
Bu Hwan Kim ◽  
Seong Jun Ahn ◽  
Seong Ho Yoo ◽  
Min Soo Lee
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Medial Parapatellar Approach ◽  
Total Knee ◽  
Medial Parapatellar

scholarly journals Better outcomes after minimally invasive surgeries compared to the standard invasive medial parapatellar approach for total knee arthroplasty: a meta-analysis

2020 ◽  
Author(s):  
Filippo Migliorini ◽  
Jörg Eschweiler ◽  
Alice Baroncini ◽  
Markus Tingart ◽  
Nicola Maffulli
Keyword(s):  
Clinical Trials ◽  
Total Knee Arthroplasty ◽  
Minimally Invasive ◽  
Knee Arthroplasty ◽  
Invasive Surgery ◽  
Meta Analysis ◽  
Medial Parapatellar Approach ◽  
Estimated Blood Loss ◽  
Total Knee ◽  
Medial Parapatellar

Abstract Purpose Minimally invasive surgery (MIS) for total knee arthroplasty (TKA) is often marketed as being able to speed up healing times over standard invasive surgery (SIS) through the medial parapatellar approach. The advantages of these minimally invasive approaches, however, are not yet definitively established. A meta-analysis of studies comparing peri-operative and post-operative differences and long-term complications of MIS versus SIS for TKA was conducted. Methods This meta-analysis was conducted following the PRISMA guidelines. The Pubmed, Google Scholar, Scopus, and Embase databases were accessed in September 2020. All clinical trials comparing minimally-invasive versus standard approaches for TKA were considered. Only studies reporting quantitative data under the outcomes of interest were included. Methodological quality assessment was performed using the PEDro appraisal score. Results This meta-analysis covers a total of 38 studies (3296 procedures), with a mean 21.3 ± 24.3 months of follow-up. The MIS group had shorter hospitalization times, lower values of total estimated blood loss, quicker times of straight-leg raise, greater values for range of motion, higher scores on the Knee Society Clinical Rating System (KSS) and its related Function Subscale (KSFS). Pain scores, anterior knee pain and revision rate were similar between MIS and SIS. SIS allowed a quicker surgical duration. Conclusion The present meta-analysis encourages the use of minimally invasive techniques for total knee arthroplasty. However, MIS TKA is technically demanding and requires a long learning curve. Level of evidence III, meta-analysis of clinical trials.

Modified Intervastus Approach to the Knee

2017 ◽  
Vol 31 (05) ◽  
pp. 422-424
Author(s):  
James Kohlman ◽  
Craig Valle ◽  
Muthana Sartawi
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Extension ◽  
Extensor Mechanism ◽  
Vastus Medialis ◽  
Medial Parapatellar Approach ◽  
Total Knee ◽  
Anterior Knee ◽  
Medial Parapatellar

AbstractThe modified intervastus approach to the anterior knee is an approach that may be used in the majority of patients undergoing total knee arthroplasty. This article presents the first description of this approach. The advantages of this approach include its extensile nature, similar to a medial parapatellar approach, and preservation of the extensor mechanism and the vastus medialis, leading to a more rapid return to active knee extension than is traditionally observed. The approach is also simple to perform, easy to close, and is compatible with more extensile approaches such as a quadriceps snip if required in revision scenarios.

One-Year Patient Outcomes for Robotic-Arm-Assisted versus Manual Total Knee Arthroplasty

2019 ◽  
Vol 32 (11) ◽  
pp. 1063-1068 ◽  
Author(s):  
Robert C. Marchand ◽  
Nipun Sodhi ◽  
Hiba K. Anis ◽  
Joseph Ehiorobo ◽  
Jared M. Newman ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Linear Regression ◽  
Physical Function ◽  
Knee Arthroplasty ◽  
Univariate Analysis ◽  
Robotic Arm ◽  
Pain Scores ◽  
Patient Reported ◽  
Total Knee ◽  
One Year

AbstractAlthough there are many studies on the alignment advantages when using the robotic arm–assisted (RAA) system for total knee arthroplasty (TKA), there have been questions regarding patient-reported outcomes. Therefore, the purpose of this study was to use this index to compare: (1) total, (2) physical function, and (3) pain scores for manual versus RAA patients. We compared 53 consecutive RAA to 53 consecutive manual TKAs. No differences in preoperative scores were found between the cohorts. Patients were administered a modified Western Ontario and McMaster Universities Osteoarthritis Index satisfaction survey preoperatively and at 1-year postoperatively. The results were broken down to: (1) total, (2) physical function, and (3) pain scores. Univariate analysis with independent samples t-tests was used to compare 1-year postoperative scores. Multivariate models with stepwise backward linear regression were utilized to evaluate the associations between scores and surgical technique, age, sex, as well as body mass index (BMI). Statistical analyses were performed with a p < 0.05 to determine significance. The RAA cohort had significantly improved mean total (6 ± 6 vs. 9 ± 8 points, p = 0.03) and physical function scores (4 ± 4 vs. 6 ± 5 points, p = 0.02) when compared with the manual cohort. The mean pain score for the RAA cohort (2 ± 3 points [range, 0–14 points]) was also lower than that for the manual cohort (3 ± 4 points [range, 0–11 points]) (p = 0.06). On backward linear regression analyses, RAA was found to be significantly associated with more improved total (β coefficient [β] −0.208, standard error [SE] 1.401, p < 0.05), function (β = 0.216, SE = 0.829, p < 0.05), and pain scores (β −0.181, SE = 0.623, p = 0.063). The RAA technique was found to have the strongest association with improved scores when compared with age, gender, and BMI. This study suggests that RAA patients may have short-term improvements at minimum 1-year postoperatively. However, longer term follow-up with greater sample sizes is needed to further validate these results.

A meta-analysis of the sub-vastus approach and medial parapatellar approach in total knee arthroplasty

2012 ◽  
Vol 21 (10) ◽  
pp. 2398-2404 ◽  
Author(s):  
Xudong Hu ◽  
Guanglin Wang ◽  
Fuxing Pei ◽  
Bin Shen ◽  
Jing Yang ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Meta Analysis ◽  
Medial Parapatellar Approach ◽  
Total Knee ◽  
Medial Parapatellar
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