Causes of revision following Oxford phase 3 unicompartmental knee arthroplasty

Kim, Seung-Ju; Postigo, Ricardo; Koo, Sowon; Kim, Jong Hun

doi:10.1007/s00167-013-2644-3

Cited by 66 publications

(63 citation statements)

References 42 publications

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“…The risk of bearing dislocation is 3 times higher in Asian patients than in their Western counterparts. Accordingly, mobile-bearing UKA may not be a proper solution for osteoarthritis in Asian patients living in cultures where high flexion of the knee is essential26).…”

Section: Discussionmentioning

confidence: 99%

Mid-Term Results of Oxford Medial Unicompartmental Knee Arthroplasty in Young Asian Patients Less than 60 Years of Age: A Minimum 5-Year Follow-up

Kim

Yoo

et al. 2017

Knee Surg Relat Res

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PurposeThe purpose of this study was to evaluate the efficacy of unicompartmental knee arthroplasty (UKA) in young active Asian patients by analyzing clinical outcomes, complications and survival rates.Materials and MethodsEighty-two knees were evaluated with a minimum follow-up of 5 years after Oxford phase 3 UKA in patients less than 60 years of age at the time of surgery. Their mean age was 54.7 years (range, 44 to 59 years). The mean follow-up period was 8.9 years (range, 5.3 to 12 years). Kaplan–Meier survivorship analysis was used to estimate implant survival.ResultsIncluding 3 bearing dislocations, 1 medial tibial collapse and 1 lateral osteoarthritis, the total complication rate was 6.1% (5/82). Of the 3 cases of bearing dislocation, 2 cases were resolved by replacing with a thicker bearing and 1 case was converted to total knee arthroplasty (TKA) due to repeated dislocation. The two knees with a medial tibial collapse and a lateral osteoarthritis were converted to TKA. The 10-year cumulative survival rate using Kaplan-Meier survival method was 94.7% (95% confidence interval: 88.7%–100%).ConclusionsOxford medial UKA was reliable and effective in young active Asian patients providing good clinical results and survival rate in the mid-term follow-up.

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Section: Discussionmentioning

confidence: 99%

Mid-Term Results of Oxford Medial Unicompartmental Knee Arthroplasty in Young Asian Patients Less than 60 Years of Age: A Minimum 5-Year Follow-up

Kim

Yoo

et al. 2017

Knee Surg Relat Res

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“…There are only a few studies reporting the clinical results and survival rates of the Oxford phase 3 UKA through a minimally invasive exposure; most of the articles report on short-and mid-term results [5,6,17,18]. In this study, we evaluated the long-term results of patients who underwent UKA with the Oxford cemented meniscal-bearing unicondylar knee prosthesis through a minimally invasive approach including a clinical, functional and radiographic assessment.…”

Section: Introductionmentioning

confidence: 99%

Oxford phase 3 unicondylar knee arthroplasty through a minimally invasive approach: long-term results

Faour-Martín

Valverde-García

Martín-Ferrero

et al. 2013

International Orthopaedics (SICOT)

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Purpose Surgical treatment options for medial compartment osteoarthritis of the knee include high tibial osteotomy, total knee arthroplasty or unicompartmental knee arthroplasty (UKA), depending on the patient's age, level of physical activity and the degree of deformity. Methods In this study, we evaluated the long-term results of patients who underwent the Oxford cemented meniscalbearing unicondylar knee prosthesis through a minimally invasive approach including a clinical, functional and radiographic assessment. Results Favourable clinical and radiological outcomes were registered overall at ten years after surgery. Overall results of UKA according to the American Knee Society (AKS) using Insall's criteria showed an excellent or good outcome for 492 knees (96.28 %), fair for 11 (2.15 %) and poor for eight (1.57 %) in the post-operative long term. Conclusions We believe that with appropriate surgical technique, patient selection, prosthetic design and specific training, surgeons should achieve good outcomes with the added advantages of a minimally invasive approach. High volume for this technique is important in our opinion.

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“…26-28 Our teaching philosophy is to emphasise the risk of such errors to our trainees – this is reflected by the very low overall dislocation rate of 0.6% in this series which compares favourably with a pooled dislocation rate of 1.5% reported for the Oxford UKA in a recent systematic review. 29 Furthermore, the failures in the current study, which tended to occur within the first two years of surgery, did not adversely affect the long-term survival when comparisons were made between trainees and consultants.…”

Section: Discussionmentioning

confidence: 56%

A survival analysis of 1084 knees of the Oxford unicompartmental knee arthroplasty

Bottomley

Jones

Rout

et al. 2016

The Bone & Joint Journal

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AimsThe aim of this to study was to compare the previously unreported long-term survival outcome of the Oxford medial unicompartmental knee arthroplasty (UKA) performed by trainee surgeons and consultants. Patients and MethodsWe therefore identified a previously unreported cohort of 1084 knees in 947 patients who had a UKA inserted for anteromedial knee arthritis by consultants and surgeons in training, at a tertiary arthroplasty centre and performed survival analysis on the group with revision as the endpoint.ResultsThe ten-year cumulative survival rate for revision or exchange of any part of the prosthetic components was 93.2% (95% confidence interval (CI) 86.1 to 100, number at risk 45). Consultant surgeons had a nine-year cumulative survival rate of 93.9% (95% CI 90.2 to 97.6, number at risk 16). Trainee surgeons had a cumulative nine-year survival rate of 93.0% (95% CI 90.3 to 95.7, number at risk 35). Although there was no differences in implant survival between consultants and trainees (p = 0.30), there was a difference in failure pattern whereby all re-operations performed for bearing dislocation (n = 7), occurred in the trainee group. This accounted for 0.6% of the entire cohort and 15% of the re-operations. ConclusionThis is the largest single series of the Oxford UKA ever reported and demonstrates that good results can be achieved by a heterogeneous group of surgeons, including trainees, if performed within a high-volume centre with considerable experience with the procedure.Cite this article: Bone Joint J 2016;(10 Suppl B):22–7.

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Causes of revision following Oxford phase 3 unicompartmental knee arthroplasty

Abstract: Mobile bearing UKA seems to be less appropriate for the Asian population as extreme knee flexion is required for cultural purposes.

Cited by 66 publications

References 42 publications

Mid-Term Results of Oxford Medial Unicompartmental Knee Arthroplasty in Young Asian Patients Less than 60 Years of Age: A Minimum 5-Year Follow-up

Mid-Term Results of Oxford Medial Unicompartmental Knee Arthroplasty in Young Asian Patients Less than 60 Years of Age: A Minimum 5-Year Follow-up

Oxford phase 3 unicondylar knee arthroplasty through a minimally invasive approach: long-term results

A survival analysis of 1084 knees of the Oxford unicompartmental knee arthroplasty

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