scholarly journals Bearing Thickness Is Not a Predictive Factor for Damage and Penetration in Oxford Unicompartmental Knee Arthroplasty—A Retrieval Analysis

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4589
Author(s):  
Johannes Adrian Eckert ◽  
Ulrike Mueller ◽  
Tilman Walker ◽  
Martin Schwarze ◽  
Sebastian Jaeger ◽  
...  
Keyword(s):  
Aseptic Loosening ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Clinical Results ◽  
Material Loss ◽  
Unicompartmental Knee ◽  
Direct Light ◽  
Total Knee ◽  
Oxford Unicompartmental Knee Arthroplasty

The medial Oxford unicompartmental knee arthroplasty (OUKA) shows good survivorship, as well as clinical results. Aseptic loosening, however, remains one of the main reasons for revision and polyethylene debris is known to cause aseptic loosening. The role of bearing thickness in total as well as unicondylar knee arthroplasty has been the subject of controversial discussions, especially the longevity of lower thickness bearings in total knee arthroplasty was questioned. The purpose of this study was to assess the influence of bearing thickness on time to revision, damage pattern, penetration, and volumetric material loss. A cohort of 47 consecutively retrieved medial OUKA bearings was analyzed with conventional direct light microscopy applying the Hood damage analysis, as well as measuring the penetration depth. In this retrieval cohort, a difference on survival time, damage, penetration, as well as volumetric material loss could not be seen. We conclude that low as well as high thickness bearings can safely be used in OUKA without any relevant differences in terms of wear and damage.

scholarly journals Clinical Results of Oxford Unicompartmental Knee Arthroplasty

2008 ◽  
Vol 57 (4) ◽  
pp. 635-638
Author(s):  
Tetsuya Fukumoto ◽  
Kazutoshi Nomura ◽  
Noburo Hashimoto ◽  
Satoshi Maeda ◽  
Haruhiko Chuma ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Clinical Results ◽  
Unicompartmental Knee ◽  
Oxford Unicompartmental Knee Arthroplasty

scholarly journals A structured evaluation of the symptomatic medial Oxford unicompartmental knee arthroplasty (UKA)

2021 ◽  
Vol 6 (10) ◽  
pp. 850-860
Author(s):  
Stein J. Janssen ◽  
Iris van Oost ◽  
Stefan J.M. Breugem ◽  
Rutger C.I. van Geenen
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Comprehensive Evaluation ◽  
Treatment Options ◽  
Accurate Assessment ◽  
Unicompartmental Knee ◽  
Mode Of Failure ◽  
Total Knee ◽  
Diagnostic Modalities ◽  
Oxford Unicompartmental Knee Arthroplasty

Unicompartmental knee arthroplasty (UKA) has several advantages over total knee arthroplasty; however, in many reports, the risk of revision remains higher after UKA. Many reasons for failure of UKA exist. Successful treatment starts with accurate assessment of the symptomatic UKA as a specific mode of failure requires a specific solution. A structured and comprehensive evaluation aids assessment of the symptomatic UKA. This review provides an overview of the causes for a symptomatic medial UKA, its risk factors, diagnostic modalities that can be used, and briefly discusses treatment options. Cite this article: EFORT Open Rev 2021;6:850-860. DOI: 10.1302/2058-5241.6.200105

scholarly journals Cemented versus Uncemented Oxford Unicompartmental Knee Arthroplasty: Is There a Difference?

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Burak Akan ◽  
Dogac Karaguven ◽  
Berk Guclu ◽  
Tugrul Yildirim ◽  
Alper Kaya ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Survival Rates ◽  
Operation Time ◽  
Clinical Results ◽  
Knee Prostheses ◽  
Unicompartmental Knee ◽  
The Cost ◽  
Oxford Unicompartmental Knee Arthroplasty

Purpose. The use of uncemented unicompartmental knee prostheses has recently increased. However, few studies on the outcomes of uncemented unicompartmental knee prostheses have been performed. The purpose of this study was to compare the outcomes of cemented and uncemented Oxford unicompartmental knee arthroplasty.Materials and Methods. This retrospective observational study evaluated the clinical and radiological outcomes of 263 medial Oxford unicompartmental prostheses (141 cemented, 122 uncemented) implanted in 235 patients. The mean follow-up was 42 months in the cemented group and 30 months in the uncemented group.Results. At the last follow-up, there were no significant differences in the clinical results or survival rates between the two groups. However, the operation time in the uncemented unicompartmental knee arthroplasty group was shorter than that in the cemented unicompartmental knee arthroplasty group. In addition, the cost of uncemented arthroplasty was greater.Conclusion. Despite the successful midterm results in the uncemented unicompartmental knee arthroplasty group, a longer follow-up period is required to determine the best fixation mode.

Total Knee Arthroplasty After Failed Unicompartmental Knee Arthroplasty. Clinical Results, Radiologic Findings, and Technical Tips

2017 ◽  
Vol 32 (1) ◽  
pp. 193-196 ◽  
Author(s):  
Estrella Borrego Paredes ◽  
Pablo Barrena Sánchez ◽  
David Serrano Toledano ◽  
Andrés I. Puente González ◽  
Salvador Fornell Pérez ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Clinical Results ◽  
Radiologic Findings ◽  
Unicompartmental Knee ◽  
Total Knee

scholarly journals Two cases of deliberate implant mismatch in knee arthroplasty

SICOT-J ◽  
2020 ◽  
Vol 6 ◽  
pp. 19
Author(s):  
Laura Marie-Hardy ◽  
Padhraig O’Loughlin ◽  
Michel Bonnin ◽  
Tarik Ait Si Selmi
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Distal Femur ◽  
Femoral Condyle ◽  
Clinical Results ◽  
Potential Solution ◽  
Knee Anatomy ◽  
Unicompartmental Knee ◽  
Total Knee

Cases: Knee arthroplasty is increasingly common with good clinical results. However, there is a cohort of patients whose native knee anatomy may not marry well with standard implants. The current authors describe two cases (one unicompartmental knee arthroplasty (UKA), one total knee arthroplasty (TKA)), during which deliberately implanting an implant designed for the contra-lateral distal femur (TKA) or contralateral femoral condyle (UKA) respectively, led to a better fit than correct-sided implants. Conclusion: The authors share their experience to raise awareness of a potential solution to such an intra-operative challenge and suggest that implant customisation may ultimately address challenges with grossly abnormal native anatomy.

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