Unicompartmental Arthroplasty of the knee

ABSTRACT Unicompartmental knee arthroplasty (UKA) is now well-established as a treatment option for isolated compartment osteoarthritis (OA) of the knee. Improvements in surgical technique, instrumentation, component design, and rapid rehabilitation has resulted good long-term survivorship and in the wider acceptance for UKA. The experiences from several centers have been key in the education of surgeons with regards to patient selection, technical considerations, and importantly avoiding common pitfalls can lead to early failure of the components. A younger patient may require revision in their lifetime, but modern UKA design allows this to be performed with minimal surgical difficulties and with good outcome. How to cite this article Chakrabarty G, Varghese M, Thambapillay S. Unicompartmental Arthroplasty of the knee. J Postgrad Med Edu Res 2015;49(2):74-78.

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Analysing the long-term results of using and those of survival terms for unicompartmental knee arthroplasty

Genij Ortopedii ◽

10.18019/1028-4427-2016-1-60-65 ◽

2016 ◽

pp. 60-65

Author(s):

Kamolhuja Eshnazarov ◽

◽

Lim Hong-Chul ◽

Murodulla Karimov ◽

◽

...

Keyword(s):

Knee Arthroplasty ◽

Unicompartmental Knee Arthroplasty ◽

Long Term Results ◽

Unicompartmental Knee

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Efficacy and mid/long-term survivorship of mobile-bearing unicompartmental knee arthroplasty for medial compartment knee osteoarthritis combined patellofemoral joint arthritis: a prospective cohort study protocol

BMJ Open ◽

10.1136/bmjopen-2020-038448 ◽

2020 ◽

Vol 10 (10) ◽

pp. e038448

Author(s):

Jingbo Cheng ◽

Mingli Feng ◽

Guanglei Cao ◽

Shibao Lu

Keyword(s):

Cohort Study ◽

Knee Osteoarthritis ◽

Prospective Cohort Study ◽

Knee Arthroplasty ◽

Unicompartmental Knee Arthroplasty ◽

Prospective Cohort ◽

Patellofemoral Joint ◽

Medial Compartment ◽

Unicompartmental Knee

IntroductionUnicompartmental knee arthroplasty (UKA) is one of the most effective surgical procedures for treating isolated medial compartment knee osteoarthritis. However, previous studies have regarded patellofemoral osteoarthritis as a contraindication for UKA. In contrast, most current research shows that damage to the articular cartilage of the patellofemoral joint, even to the extent of full-thickness cartilage loss, has no influence on the outcome of UKA.Methods and analysisStudy settings: This study is a prospective cohort study that will compare the Forgotten Joint Score and Lonner patellofemoral joint score of patients who have undergone UKA; the patients will be divided into two groups (with and without patellofemoral joint osteoarthritis (PFJOA)). Primary objective: Long-term follow-up will be used to evaluate the effect of the operation on the above-mentioned scores in both the groups. Secondary objective: We will divide the patients from the with PFJOA group into three subgroups according to the localisation of patellofemoral cartilage lesions (medial zone, lateral zone and central zone). We aim to compare knee joint scores among these groups and clarify the impact of different wear sites on clinical efficacy. We will use CT to explore the potential mechanism through which UKA affects patellofemoral joint-related parameters (lateral patellar tilt, lateral patellar shift and tibia tuberosity-trochlear groove distance). We will also record mid-term/long-term post-surgery complications.Ethics and disseminationThis study’s protocol is in accordance with the Declaration of Helsinki. This study was approved by the Ethics Committee of Xuanwu Hospital. The results of this study will be disseminated in international peer-reviewed journals.Trial registration numberChiCTR2000030310.

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

Small Implants in Knee Reconstruction ◽

10.1007/978-88-470-2655-1_6 ◽

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

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Long Term Clinical Outcome of Total Knee Arthroplasty. The Effect of Limp Alignment, Implant Placement and Stability as Controlled by Surgical Technique

Total Knee Arthroplasty ◽

10.1007/978-1-4471-6660-3_10 ◽

2015 ◽

pp. 85-100

Author(s):

John Michos ◽

Theofilos Karachalios

Keyword(s):

Total Knee Arthroplasty ◽

Surgical Technique ◽

Clinical Outcome ◽

Knee Arthroplasty ◽

Implant Placement ◽

Total Knee

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Metal-Backed Tibial Components Do Not Reduce Risk of Early Aseptic Loosening in Unicompartmental Knee Arthroplasty: A Systematic Review and Meta-Analysis

The Journal of Knee Surgery ◽

10.1055/s-0038-1677506 ◽

2019 ◽

Vol 33 (02) ◽

pp. 180-189 ◽

Cited By ~ 1

Author(s):

Giuseppe Gianluca Costa ◽

Mirco Lo Presti ◽

Alberto Grassi ◽

Giuseppe Agrò ◽

Sergio Cialdella ◽

...

Keyword(s):

Systematic Review ◽

Aseptic Loosening ◽

Knee Arthroplasty ◽

Unicompartmental Knee Arthroplasty ◽

Tibial Component ◽

Revision Rate ◽

Meta Analysis ◽

Female Patients ◽

Unicompartmental Knee

AbstractLong-term results of unicompartmental knee arthroplasty (UKA) have shown a slightly higher revision rate than total knee arthroplasty (TKA), and implant fixation geometry seems to affect prosthetic survivorship. Whether metal-backed tibial component leads to superior performance over the all-polyethylene design is unclear, and a lack of evidence exists in literature. Our purpose was to demonstrate which implant design of UKA (all-polyethylene or metal-backed tibial component) is clinically superior regarding revision rates and clinical functioning, and investigate the role of potential factors that could affect the revision rate. A systematic review was conducted for clinical studies comparing all-polyethylene and metal-backed tibial components used in primary UKAs in terms of revision rates and clinical scores. Meta-regression techniques were used to explore factors modifying the observed effect. All causes of revision were extracted and analyzed, to find statistically significant differences between the two groups. Our research strategy generated a systematic review of nine studies comprising 1,101 UKAs in 1,088 patients with 87 revisions for any reason. Meta-analysis showed a higher, but not statistically significant, risk of aseptic revision in the all-polyethylene group. Studies with a smaller sample size and higher percentage of female patients were correlated to a higher relative risk of revision in favor of all-polyethylene UKAs. Differently, patients' age and duration of follow-up did not influence the risk ratio. The main cause for revision was aseptic loosening in both implants' component, with no statistically differences in the two groups examined. Our results do not show a superiority of the metal-backed tibial component in UKAs in terms of survivorship, although extreme care must be given for patients with high risk of early failure, such as female patients. However, surgical experience, in combination with careful patient selection, remains paramount and may lead to better long-term outcomes in patients requiring UKA. This is a Level III, therapeutic study.

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