scholarly journals The most influential papers in unicompartmental knee arthroplasty

2020 ◽  
Vol 32 (1) ◽  
Author(s):  
Lukas A. Holzer ◽  
Gerold Holzer
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Geographic Origin ◽  
Absolute Number ◽  
Osteoarthritis Of The Knee ◽  
Journal Title ◽  
Level Of Evidence ◽  
Unicompartmental Knee ◽  
Publication Number ◽  
Number Of Citations

Abstract Purpose Unicompartmental knee arthroplasty (UKA) is a treatment option for anteromedial osteoarthritis of the knee. The number of UKA has been increasing constantly worldwide in recent decades. The aim of this study was to determine the most frequently cited scientific articles addressing this subject and to establish a ranking of the 50 most influential papers. Methods The 50 most cited articles related to UKA were searched in Web of Science® (Clarivate Analytics, Penn., USA) by the use of defined search terms. All types of scientific papers with reference to this topic were ranked according to the absolute number of citations and analyzed for the following characteristics: journal title, year of publication, number of citations, citation density, geographic origin, article type, and level of evidence. Results The 50 most cited articles had up to 453 citations. Most papers were published in the Journal of Bone and Joint Surgery (British volume). More than half of the articles were published in the 2000s and 2010s (n = 30). Ten countries contributed to the top 50 list, with most contributions from the UK (n = 17). Most articles could be attributed to the category of Clinical Science (n = 33), and most reported level IV studies. Conclusion Most of the frequently cited articles in UKA are clinical studies that have a low level of evidence. Few basic scientific studies could be identified, which suggests that most product development is done by commercial companies.

scholarly journals Good mid- to long-term results of the cemented oxford phase 3 unicompartmental knee arthroplasty in a non-designer centre

2021 ◽  
Author(s):  
D. M. Moore ◽  
G. A. Sheridan ◽  
A. Welch-Phillips ◽  
J. M. O’Byrne ◽  
P. Kenny
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Womac Score ◽  
Long Term Results ◽  
Secondary Outcome ◽  
Osteoarthritis Of The Knee ◽  
Phase 3 ◽  
Unicompartmental Knee ◽  
Aseptic Revision

Abstract Purpose Unicompartmental knee arthroplasty (UKA) provides patients with an alternative treatment to TKA in isolated medial compartment osteoarthritis providing better functional outcomes and faster recovery in the short term. Our aim was to quantify revision rates, predictors of revision, mortality rate and functionality of the Oxford Phase 3 UKA in a non-designer institution. Methods This was a retrospective review of prospectively collected regional registry data. All Oxford Phase 3 UKAs performed for medial tibio-femoral osteoarthritis of the knee joint were included from a single academic institution between the period of January 1st 2006 and December 30th 2009. Kaplan-Meier survivorship curves adjusting for loss to follow-up and deceased patients were generated. Primary outcome variables included all-cause and aseptic revision. Secondary outcome variables included functional outcome scores. Patients were reviewed at 6 months, 2 years, 5 years, 10 years and 15 years. Results A total of 64 cemented Oxford phase 3 UKAs were performed between January 2006 and November 2009. Fifteen-year follow-up data were available for 51 patients, of these 12 required revision. Survival rates, adjusting for patients that were either lost to follow-up or deceased, were 87.5% at 5 years, 81.4% at 10 years and 76.4% at 15 years. The overall aseptic revision rate at the time of review was 18.75% (n = 12). The only significant predictor of postoperative WOMAC score at 15 years was the preoperative WOMAC score (p = 0.03). Conclusion The Oxford Phase 3 UKA for medial tibio-femoral arthritis has promising outcomes at 15-year follow-up with a survival rate of 76.4% in a non-designer centre. Level of Evidence III.

scholarly journals Effect of vertical cut on coronal coverage and rotation of tibial component in Oxford unicompartmental knee arthroplasty

2020 ◽  
Vol 48 (5) ◽  
pp. 030006052092242
Author(s):  
Guanghan Gao ◽  
Zheng Li ◽  
Yannong Wang ◽  
Guangzhong Yang ◽  
Jiang Huang ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Tibial Component ◽  
Lateral Wall ◽  
Osteoarthritis Of The Knee ◽  
Unicompartmental Knee ◽  
Component Rotation ◽  
Anteroposterior View ◽  
The Mean ◽  
Oxford Unicompartmental Knee Arthroplasty

Objective This study was performed to investigate the influence of a standard Oxford vertical cut on the coronal coverage and rotation of the tibial component and determine whether a relationship exists between coverage and rotation. Methods We retrospectively analyzed 71 patients with anteromedial osteoarthritis of the knee treated by Oxford unicompartmental knee arthroplasty in one center from October 2016 to October 2017. The distance of coronal coverage was measured on a postoperative anteroposterior view of the tibial component. Two different reference lines between the lateral wall of the tibial component were defined as rotation angle α and β, respectively, on a computed tomography scan. Results The mean distance was 0.3 ± 1.1 mm. The mean angle α and β were 5.7° ± 4.6° and 8.4° ± 4.6°, respectively. There were no significant differences in the distance according to the tibial component rotation or in the α and β angles according to the coronal coverage. No significant correlation was found between the α and β angles and the distance. Conclusion A standard tibial vertical cut caused various changes in coronal coverage and rotation of the tibial component. The rotation of the tibial component did not affect coverage within a certain range.

Simultaneous bilateral unicompartmental knee arthroplasty surgery has benefits in low complication rate and cost-effectiveness: a systematic review

2020 ◽  
Vol 5 (4) ◽  
pp. 218-223
Author(s):  
Nicolas Pujol ◽  
Yoshiki Okazaki ◽  
Takayuki Furumatsu
Keyword(s):  
Systematic Review ◽  
Cost Effectiveness ◽  
Knee Osteoarthritis ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Cost Savings ◽  
Level Of Evidence ◽  
Patient Profile ◽  
One Stage ◽  
Unicompartmental Knee

ImportanceBilateral knee osteoarthritis is frequent and the best choice of treatment remains questionable, especially when the surgeon has to consider simultaneous or staged bilateral unicompartmental knee arthroplasty (UKA).ObjectiveThe purpose of this systematic review was to conduct a systematic review assessing the clinical outcomes associated with simultaneous bilateral and staged bilateral UKA.Evidence reviewA literature search was conducted in June 2019 in Medline, PubMed and Embase. A full-text review of eligible studies was conducted by two investigators.FindingsA total of 10 retrospective studies were identified. These studies described the results of simultaneous bilateral UKA compared either to staged bilateral UKA or unilateral UKA. Results showed that the prevalence of mortality at a minimum of 30 days postoperatively, deep vein thrombosis, the rate of blood transfusion and reintervention were not higher in patients undergoing a one-stage bilateral UKA. The cost-effectiveness is in favour of doing a one-stage procedure due to the shortness of total hospital stay.Conclusions and relevanceOne-stage simultaneous bilateral UKA can be performed with preventing the postoperative complication, and result in cost savings for patients with symptomatic medial bilateral unicompartmental knee osteoarthritis. Further comparative studies are necessary to determine the best patient profile for such a surgery, and the technical considerations during surgery (consecutive surgery or simultaneous surgery with two operative teams).Level of evidenceIV.

scholarly journals Robotic-assisted Unicompartmental knee Arthroplasty optimizes joint line restitution better than conventional surgery

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Roberto Negrín ◽  
Jaime Duboy ◽  
Nicolás O. Reyes ◽  
Maximiliano Barahona ◽  
Magaly Iñiguez ◽  
...  
Keyword(s):  
Femoral Component ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Tibial Slope ◽  
Conventional Technique ◽  
Joint Line ◽  
Level Of Evidence ◽  
Robotic Assisted ◽  
Tibial Resection ◽  
Unicompartmental Knee

Abstract Purpose To compare joint line restoration after unicompartmental knee arthroplasty (UKA) between conventional and robotic-assisted surgery. Previous studies have shown that joint line distalization can lead to higher failure rates. The hypothesis was that robotic-assisted UKA is associated with less femoral component distalization and a precise tibial cut, which allows a more anatomical restitution of the knee joint line. Methods Retrospective cohort study of patients undergoing medial or lateral UKA between May 2018 and March 2020. Preoperative and postoperative radiologic assessment of the joint line was performed by two observers, using three different methods, one for tibial slope and one for tibial resection. Robotic assisted UKA and conventional UKA groups were compared. Results Sixty UKA were included, of which 48 (77.42%) were medial. Robotic-assisted UKA were 40 (64.52%) and 22(35.48%) were conventional The distalization of the femoral component was higher in the conventional group despite the method of measurement used In both Weber methods, the difference was statistically different: Conventional 2.3 (0.9 to 5.6) v/s Robotic 1.5 (− 1.1 to 4.1) (p =0.0025*). A higher proportion of patients achieved a femoral component position ≤ two millimeters from the joint line using robotic-assisted UKA compared to the conventional technique . No statistical difference between robotic-assisted and conventional UKA was found in tibial resection and slope. Conclusion Robotic-assisted UKA shows a better rate of joint line restoration due to less femoral component distalization than conventional UKA. No difference was found in the amount of tibial resection between groups in this study. Level of evidence III

scholarly journals Radiological outcomes following manual and robotic-assisted unicompartmental knee arthroplasty

2021 ◽  
Vol 2 (3) ◽  
pp. 191-197
Author(s):  
Gregory S. Kazarian ◽  
Robert L. Barrack ◽  
Toby N. Barrack ◽  
Charles M. Lawrie ◽  
Ryan M. Nunley
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Robotic System ◽  
Target Range ◽  
Implant Survival ◽  
Level Of Evidence ◽  
Robotic Assisted ◽  
Unicompartmental Knee ◽  
Medial Unicompartmental Knee Arthroplasty ◽  
Survival Level

Aims The purpose of this study was to compare the radiological outcomes of manual versus robotic-assisted medial unicompartmental knee arthroplasty (UKA). Methods Postoperative radiological outcomes from 86 consecutive robotic-assisted UKAs (RAUKA group) from a single academic centre were retrospectively reviewed and compared to 253 manual UKAs (MUKA group) drawn from a prior study at our institution. Femoral coronal and sagittal angles (FCA, FSA), tibial coronal and sagittal angles (TCA, TSA), and implant overhang were radiologically measured to identify outliers. Results When assessing the accuracy of RAUKAs, 91.6% of all alignment measurements and 99.2% of all overhang measurements were within the target range. All alignment and overhang targets were simultaneously met in 68.6% of RAUKAs. When comparing radiological outcomes between the RAUKA and MUKA groups, statistically significant differences were identified for combined outliers in FCA (2.3% vs 12.6%; p = 0.006), FSA (17.4% vs 50.2%; p < 0.001), TCA (5.8% vs 41.5%; p < 0.001), and TSA (8.1% vs 18.6%; p = 0.023), as well as anterior (0.0% vs 4.7%; p = 0.042), posterior (1.2% vs 13.4%; p = 0.001), and medial (1.2% vs 14.2%; p < 0.001) overhang outliers. Conclusion Robotic system navigation decreases alignment and overhang outliers compared to manual UKA. Given the association between component placement errors and revision in UKA, this strong significant improvement in accuracy may improve implant survival. Level of Evidence: III Cite this article: Bone Jt Open 2021;2-3:191–197.

scholarly journals UNICOMPARTIMENTAL KNEE ARTHROPLASTY - 15 YEARS FOLLOW UP

2020 ◽  
Vol 28 (5) ◽  
pp. 233-235
Author(s):  
GILBERTO LUIS CAMANHO
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Case Series ◽  
Level Of Evidence ◽  
Unicompartmental Knee ◽  
Long Term Follow Up ◽  
Lost To Follow Up ◽  
Knee Arthroplasty Surgery ◽  
Arthroplasty Surgery

ABSTRACT Objective: To evaluate clinically and radiologically the long-term follow-up of patients with anteromedial osteoarthritis who underwent unicompartmental knee arthroplasty surgery. Methods: This study included 36 patients who underwent unicompartmental knee arthroplasty surgery for medial compartmental osteoarthritis with a minimum of 15-year post-operative follow-up. All surgeries were performed by a single surgeon (G.L.C) using the Miller-Galante unicompartmental knee implant. Patients were analyzed regarding their clinical functional and implant radiographic conditions. Results: From the 46 patients who could have completed 15 years of follow-up, three required revision surgery with conversion to total knee arthroplasty (6.5%), 36 completed the 15-year follow-up period, and the others were lost to follow-up for reasons not related to unicompartmental arthroplasty. Conclusion: In these 36 patients, the result was satisfactory after follow-up, with complaints and sign of progression of osteoarthritis in some cases. Level of Evidence IV, Case series.

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