Unicompartmental Knee Arthroplasty with a Mobile-Bearing Prosthesis: Long-Term Results

2013 ◽  
pp. 51-58
Author(s):  
Hemant G. Pandit ◽  
David W. Murray ◽  
Christopher A. F. Dodd
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Mobile Bearing ◽  
Long Term Results ◽  
Unicompartmental Knee

scholarly journals Long-Term Results of Medial Unicompartmental Knee Arthroplasty for Knee Avascular Necrosis

2019 ◽  
Vol 34 (3) ◽  
pp. 465-468 ◽  
Author(s):  
Matthieu Ollivier ◽  
Christophe Jacquet ◽  
Antoine Lucet ◽  
Sebastien Parratte ◽  
Jean-Noël Argenson
Keyword(s):  
Avascular Necrosis ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Long Term Results ◽  
Unicompartmental Knee ◽  
Medial Unicompartmental Knee Arthroplasty

scholarly journals Robotic-assisted unicompartmental knee arthroplasty: a review

Arthroplasty ◽  
2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Pei Liu ◽  
Fei-fan Lu ◽  
Guo-jie Liu ◽  
Xiao-hong Mu ◽  
Yong-qiang Sun ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Knee Replacement ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Long Term Results ◽  
Cochrane Library ◽  
Limb Alignment ◽  
Robotic Assisted ◽  
Unicompartmental Knee

Abstract Purpose Presented here is an up-to-date review concerning robotic-assisted unicompartmental knee arthroplasty (rUKA), including its rationale, operative system, pros and cons. Methods We did a systematic research in electronic databases, including PubMed, Cochrane Library, Web of Science, and Embase up to March 30, 2020 to retrieve literature pertaining to rUKA. The search strategies “(robotic* AND knee arthroplasty OR knee replacement)” and “(knee arthroplasty OR knee replacement NOT total)” were used. Studies describing rUKA and clinical trials, dry bone or cadaveric researches regarding technologies, positioning, alignment, function, or survivorship of implants were included in this review. All retrieved studies were first browsed for eligibility on the basis of title and abstract, and the selected studies were further evaluated by reading full text for final inclusion. Results Robotic-assisted technology has been found to increase the accuracy of bone preparation and implant placement, reduce technical variability and outliers, and enhance reproduction of limb alignment. Additionally, early clinical outcomes were excellent, but mid-term follow-up showed no superiority in component survivorship. The potential drawbacks of the robotic-assisted technology include relatively-low time- and cost-effectiveness, development of some rUKA-related complications, and lack of support by high-quality literature. Conclusion This review shows that rUKA can decrease the number of outliers concerning the optimal implant positioning and limb alignment. However, due to absence of extensive studies on clinical outcomes and long-term results, it remains unclear whether the improved component positioning translates to better clinical outcomes or long-term survivorship of the implant. Nevertheless, since an accurate implant position is presumably beneficial, robotic-assisted technology is worth recommendation in UKA.

scholarly journals Oxford domed lateral unicompartmental knee arthroplasty

2020 ◽  
Vol 102-B (8) ◽  
pp. 1033-1040 ◽  
Author(s):  
James A. Kennedy ◽  
Hasan R. Mohammad ◽  
Irene Yang ◽  
Stephen J. Mellon ◽  
Christopher A. F. Dodd ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Oxford Knee Score ◽  
Mobile Bearing ◽  
Good Alternative ◽  
Lateral Compartment ◽  
Long Term Results ◽  
Unicompartmental Knee ◽  
Lateral Unicompartmental Knee Arthroplasty ◽  
The Stability

Aims To report mid- to long-term results of Oxford mobile bearing domed lateral unicompartmental knee arthroplasty (UKA), and determine the effect of potential contraindications on outcome. Methods A total of 325 consecutive domed lateral UKAs undertaken for the recommended indications were included, and their functional and survival outcomes were assessed. The effects of age, weight, activity, and the presence of full-thickness erosions of cartilage in the patellofemoral joint on outcome were evaluated. Results Median follow-up was seven years (3 to 14), and mean age at surgery was 65 years (39 to 90). Median Oxford Knee Score (OKS) was 43 (interquartile range (IQR) 37 to 47), with 260 (80%) achieving a good or excellent score (OKS > 34). Revisions occurred in 34 (10%); 14 (4%) were for dislocation, of which 12 had no recurrence following insertion of a new bearing, and 12 (4%) were revised for medial osteoarthritis (OA). Ten-year survival was 85% (95% confidence interval (CI) 79 to 90, at risk 72). Age, weight, activity, and patellofemoral erosions did not have a significant effect on the clinical outcome or survival. Conclusion Domed lateral UKA provides a good alternative to total knee arthroplasty (TKA) in the management of lateral compartment OA. Although dislocation is relatively easy to treat successfully, the dislocation rate of 4% is high. It is recommended that the stability of the bearing is assessed intraoperatively. If the bearing can easily be displaced, the fixed rather than the mobile bearing version of the Oxford lateral tibial component should be inserted instead. Younger age, heavier weight, high activity, and patellofemoral erosions did not detrimentally affect outcome, so should not be considered contraindications. Cite this article: Bone Joint J 2020;102-B(8):1033–1040.

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.

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