Component positioning of the first 300 mobile bearing unicompartmental knee arthroplasties

2021 ◽  
Author(s):  
Landon Morikawa ◽  
Dylan Combs ◽  
Samantha Andrews ◽  
Kristin Mathews ◽  
Cass Nakasone
Keyword(s):  
Mobile Bearing ◽  
Unicompartmental Knee ◽  
Unicompartmental Knee Arthroplasties

Eight Hundred Twenty-Five Medial Mobile-Bearing Unicompartmental Knee Arthroplasties: The First 10-Year US Multi-Center Survival Analysis

2018 ◽  
Vol 33 (3) ◽  
pp. 677-683 ◽  
Author(s):  
Omar K. Alnachoukati ◽  
John W. Barrington ◽  
Keith R. Berend ◽  
Michael C. Kolczun ◽  
Roger H. Emerson ◽  
...  
Keyword(s):  
Survival Analysis ◽  
Mobile Bearing ◽  
Unicompartmental Knee ◽  
Unicompartmental Knee Arthroplasties

Oxford medial mobile bearing unicompartmental knee arthroplasty

2014 ◽  
pp. 6-18
Author(s):  
Vijay Kumar ◽  
Christopher Dodd ◽  
David Murray ◽  
Hemant Pandit
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Mobile Bearing ◽  
Unicompartmental Knee

The effect of tibial and femoral component coronal alignment on clinical outcomes and survivorship in unicompartmental knee arthroplasty

2021 ◽  
Vol 103-B (2) ◽  
pp. 338-346
Author(s):  
Yong Zhi Khow ◽  
Ming Han Lincoln Liow ◽  
Merrill Lee ◽  
Jerry Yongqiang Chen ◽  
Ngai Nung Lo ◽  
...  
Keyword(s):  
Femoral Component ◽  
Short Form ◽  
Oxford Knee Score ◽  
Patient Reported Outcome Measures ◽  
Patient Reported Outcome ◽  
Knee Score ◽  
Unicompartmental Knee ◽  
Unicompartmental Knee Arthroplasties ◽  
Implant Survivorship ◽  
Patient Reported

Aims This study aimed to identify the tibial component and femoral component coronal angles (TCCAs and FCCAs), which concomitantly are associated with the best outcomes and survivorship in a cohort of fixed-bearing, cemented, medial unicompartmental knee arthroplasties (UKAs). We also investigated the potential two-way interactions between the TCCA and FCCA. Methods Prospectively collected registry data involving 264 UKAs from a single institution were analyzed. The TCCAs and FCCAs were measured on postoperative radiographs and absolute angles were analyzed. Clinical assessment at six months, two years, and ten years was undertaken using the Knee Society Knee score (KSKS) and Knee Society Function score (KSFS), the Oxford Knee Score (OKS), the 36-Item Short-Form Health Survey questionnaire (SF-36), and range of motion (ROM). Fulfilment of expectations and satisfaction was also recorded. Implant survivorship was reviewed at a mean follow-up of 14 years (12 to 16). Multivariate regression models included covariates, TCCA, FCCA, and two-way interactions between them. Partial residual graphs were generated to identify angles associated with the best outcomes. Kaplan-Meier analysis was used to compare implant survivorship between groups. Results Significant two-way interaction effects between TCCA and FCCA were identified. Adjusted for each other and their interaction, a TCCA of between 2° and 4° and a FCCA of between 0° and 2° were found to be associated with the greatest improvements in knee scores and the probability of fulfilling expectations and satisfaction at ten years. Patients in the optimal group whose TCCA and FCCA were between 2° and 4°, and 0° and 2°, respectively, had a significant survival benefit at 15 years compared with the non-optimal group (optimal: survival = 100% vs non-optimal: survival = 92%, 95% confidence interval (CI) 88% to 96%). Conclusion Significant two-way interactions between the TCCA and FCCA demonstrate the importance of evaluating the alignment of the components concomitantly in future studies. By doing so, we found that patients who concomitantly had both a TCCA of between 2° and 4° and a FCCA of between 0° and 2° had the best patient-reported outcome measures at ten years and better survivorship at 15 years. Cite this article: Bone Joint J 2021;103-B(2):338–346.

scholarly journals An Unusual Presentation of Insert Dislocation and MCL Rupture in Unicompartmental Knee Replacement with 2 Years Postoperative Results: Does It Functional?

2019 ◽  
Vol 2019 ◽  
pp. 1-5 ◽  
Author(s):  
Ali Asma ◽  
Mehmet Erduran ◽  
Musa Eymir
Keyword(s):  
Quality Of Life ◽  
Pain Intensity ◽  
Knee Replacement ◽  
Functional Capacity ◽  
Primary Repair ◽  
Mobile Bearing ◽  
Unicompartmental Knee Replacement ◽  
Unicompartmental Knee ◽  
Bearing Dislocation

According to our knowledge, there is no prior article that reports functional results of medial collateral ligament (MCL) primary repair and insert change after MCL rupture and mobile-bearing dislocation as a late complication of unicompartmental knee replacement (UKR). Firstly, 63-year-old woman was treated with UKR due to anteromedial knee osteoarthritis of the right knee joint. 1 year after UKR surgery, she suffered from MCL rupture and mobile-bearing dislocation because of falls while getting on a public bus, and therefore, secondly, she was operated with MCL primary repair and mobile-bearing change and followed up for 2 years. The patient was evaluated regarding functional capacity, pain intensity, range of motion (RoM), and quality of life. Our case showed an improvement in the functional level and the other outcomes (pain intensity and quality of life) at postoperative 2nd year when compared to the preoperative period. The wellbeing of our case in about the postop 2nd year functional capacity and also other outcomes after revision surgery prompted us to continue to this surgery approach in the surgical management of similar cases that may arise thereafter.

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