Results of the Oxford Phase 3 Mobile Bearing Medial Unicompartmental Knee Arthroplasty From an Independent Center: 467 Knees at a Mean 6-Year Follow-Up: Analysis of Predictors of Failure
Abstract A retrospective review of 467 Oxford UKAs was performed in 387 patients. Thirty-eight knees (8.1%) were revised to TKA at a mean of 49 months, most commonly for lateral compartment OA (47%). The 5-year cumulative survival using revision to TKA was 98.5%. Revisions required short stems in 26...
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| Veröffentlicht in: | The Journal of arthroplasty 2014-09, Vol.29 (9), p.193-200 |
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| creator | Burnett, R. Stephen J., MD, FRCSC Nair, Rajesh, BSc, MD Hall, Christine A., MD, FRCPC Jacks, Duncan A., MD, FRCSC Pugh, Luke, MD, FRCSC McAllister, Megan M., BSc |
| description | Abstract A retrospective review of 467 Oxford UKAs was performed in 387 patients. Thirty-eight knees (8.1%) were revised to TKA at a mean of 49 months, most commonly for lateral compartment OA (47%). The 5-year cumulative survival using revision to TKA was 98.5%. Revisions required short stems in 26% and augments in 21% of cases. The mobile bearing dislocation rate was 0.64%. Correction of ≥ 3–5° from the preoperative alignment in a valgus direction was predictive of revision to TKA ( P < .0001). Multivariate analysis revealed female gender ( P = .002) also was associated with an increased risk of revision. Careful attention to the degree of mechanical axis correction with an overall maintained varus alignment may reduce revision rates for mobile bearing UKA. |
| doi_str_mv | 10.1016/j.arth.2014.01.035 |
| format | Article |
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Stephen J., MD, FRCSC ; Nair, Rajesh, BSc, MD ; Hall, Christine A., MD, FRCPC ; Jacks, Duncan A., MD, FRCSC ; Pugh, Luke, MD, FRCSC ; McAllister, Megan M., BSc</creator><creatorcontrib>Burnett, R. Stephen J., MD, FRCSC ; Nair, Rajesh, BSc, MD ; Hall, Christine A., MD, FRCPC ; Jacks, Duncan A., MD, FRCSC ; Pugh, Luke, MD, FRCSC ; McAllister, Megan M., BSc</creatorcontrib><description>Abstract A retrospective review of 467 Oxford UKAs was performed in 387 patients. Thirty-eight knees (8.1%) were revised to TKA at a mean of 49 months, most commonly for lateral compartment OA (47%). The 5-year cumulative survival using revision to TKA was 98.5%. Revisions required short stems in 26% and augments in 21% of cases. The mobile bearing dislocation rate was 0.64%. Correction of ≥ 3–5° from the preoperative alignment in a valgus direction was predictive of revision to TKA ( P < .0001). Multivariate analysis revealed female gender ( P = .002) also was associated with an increased risk of revision. Careful attention to the degree of mechanical axis correction with an overall maintained varus alignment may reduce revision rates for mobile bearing UKA.</description><identifier>ISSN: 0883-5403</identifier><identifier>EISSN: 1532-8406</identifier><identifier>DOI: 10.1016/j.arth.2014.01.035</identifier><identifier>PMID: 25060560</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Adult ; Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Knee - methods ; Female ; Follow-Up Studies ; Humans ; knee arthroplasty ; Knee Prosthesis ; Male ; Metal-on-Metal Joint Prostheses ; Middle Aged ; mobile bearing ; Orthopedics ; Osteoarthritis, Knee - surgery ; Oxford knee ; Postoperative Complications ; Prosthesis Design ; Reoperation - statistics & numerical data ; Retrospective Studies ; revision ; Risk Factors ; Treatment Outcome ; unicompartmental</subject><ispartof>The Journal of arthroplasty, 2014-09, Vol.29 (9), p.193-200</ispartof><rights>Elsevier Inc.</rights><rights>2014 Elsevier Inc.</rights><rights>Copyright © 2014 Elsevier Inc. 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Stephen J., MD, FRCSC</creatorcontrib><creatorcontrib>Nair, Rajesh, BSc, MD</creatorcontrib><creatorcontrib>Hall, Christine A., MD, FRCPC</creatorcontrib><creatorcontrib>Jacks, Duncan A., MD, FRCSC</creatorcontrib><creatorcontrib>Pugh, Luke, MD, FRCSC</creatorcontrib><creatorcontrib>McAllister, Megan M., BSc</creatorcontrib><title>Results of the Oxford Phase 3 Mobile Bearing Medial Unicompartmental Knee Arthroplasty From an Independent Center: 467 Knees at a Mean 6-Year Follow-Up: Analysis of Predictors of Failure</title><title>The Journal of arthroplasty</title><addtitle>J Arthroplasty</addtitle><description>Abstract A retrospective review of 467 Oxford UKAs was performed in 387 patients. Thirty-eight knees (8.1%) were revised to TKA at a mean of 49 months, most commonly for lateral compartment OA (47%). The 5-year cumulative survival using revision to TKA was 98.5%. Revisions required short stems in 26% and augments in 21% of cases. The mobile bearing dislocation rate was 0.64%. Correction of ≥ 3–5° from the preoperative alignment in a valgus direction was predictive of revision to TKA ( P < .0001). Multivariate analysis revealed female gender ( P = .002) also was associated with an increased risk of revision. Careful attention to the degree of mechanical axis correction with an overall maintained varus alignment may reduce revision rates for mobile bearing UKA.</description><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Arthroplasty, Replacement, Knee - methods</subject><subject>Female</subject><subject>Follow-Up Studies</subject><subject>Humans</subject><subject>knee arthroplasty</subject><subject>Knee Prosthesis</subject><subject>Male</subject><subject>Metal-on-Metal Joint Prostheses</subject><subject>Middle Aged</subject><subject>mobile bearing</subject><subject>Orthopedics</subject><subject>Osteoarthritis, Knee - surgery</subject><subject>Oxford knee</subject><subject>Postoperative Complications</subject><subject>Prosthesis Design</subject><subject>Reoperation - statistics & numerical data</subject><subject>Retrospective Studies</subject><subject>revision</subject><subject>Risk Factors</subject><subject>Treatment Outcome</subject><subject>unicompartmental</subject><issn>0883-5403</issn><issn>1532-8406</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9UsFuEzEQXSEQDYUf4IB85LJhbK-dTYWQQkSgolUrIAdOlusdEwfverF3W_JrfB1OUjhw4DKW7TdvZt6bonhOYUqBylfbqY7DZsqAVlOgU-DiQTGhgrOyrkA-LCZQ17wUFfCT4klKWwBKhageFydMgAQhYVL8-oRp9EMiwZJhg-Tqpw2xIdcbnZBwchlunEfyFnV03TdyiY3Tnqw7Z0Lb5-otdkN--NghkkVuJobe6zTsyCqGluiOnHcN9phDN5BlDhjPSCVnh4xE9EB0Js04WX7NNcgqeB_uynV_Rhad9rvkDp1dx1zYDCEebivt_BjxafHIap_w2f15WqxX774sP5QXV-_Pl4uL0ghBh3I2n0tmaQW2kkwaylALWeOssdKAFfmvsnYGvNGNZSwrBmAkhfm8AoGNFfy0eHnk7WP4MWIaVOuSQe91h2FMimYhRc1qyjOUHaEmhpQiWtVH1-q4UxTU3jO1VXvP1N4zBVRlz3LSi3v-8abF5m_KH5My4PURgHnKW4dRJeOwM1mTiGZQTXD_53_zT7rxLjuo_XfcYdqGMWap8xwqMQXq835r9kuTJQPOqzn_DQoFvN0</recordid><startdate>20140901</startdate><enddate>20140901</enddate><creator>Burnett, R. 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Stephen J., MD, FRCSC ; Nair, Rajesh, BSc, MD ; Hall, Christine A., MD, FRCPC ; Jacks, Duncan A., MD, FRCSC ; Pugh, Luke, MD, FRCSC ; McAllister, Megan M., BSc</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c551t-79962f140f4626c12ea568e7df6c0f562f4ff703dadf2288300c61099405edf53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Arthroplasty, Replacement, Knee - methods</topic><topic>Female</topic><topic>Follow-Up Studies</topic><topic>Humans</topic><topic>knee arthroplasty</topic><topic>Knee Prosthesis</topic><topic>Male</topic><topic>Metal-on-Metal Joint Prostheses</topic><topic>Middle Aged</topic><topic>mobile bearing</topic><topic>Orthopedics</topic><topic>Osteoarthritis, Knee - surgery</topic><topic>Oxford knee</topic><topic>Postoperative Complications</topic><topic>Prosthesis Design</topic><topic>Reoperation - statistics & numerical data</topic><topic>Retrospective Studies</topic><topic>revision</topic><topic>Risk Factors</topic><topic>Treatment Outcome</topic><topic>unicompartmental</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Burnett, R. 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Stephen J., MD, FRCSC</au><au>Nair, Rajesh, BSc, MD</au><au>Hall, Christine A., MD, FRCPC</au><au>Jacks, Duncan A., MD, FRCSC</au><au>Pugh, Luke, MD, FRCSC</au><au>McAllister, Megan M., BSc</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Results of the Oxford Phase 3 Mobile Bearing Medial Unicompartmental Knee Arthroplasty From an Independent Center: 467 Knees at a Mean 6-Year Follow-Up: Analysis of Predictors of Failure</atitle><jtitle>The Journal of arthroplasty</jtitle><addtitle>J Arthroplasty</addtitle><date>2014-09-01</date><risdate>2014</risdate><volume>29</volume><issue>9</issue><spage>193</spage><epage>200</epage><pages>193-200</pages><issn>0883-5403</issn><eissn>1532-8406</eissn><abstract>Abstract A retrospective review of 467 Oxford UKAs was performed in 387 patients. Thirty-eight knees (8.1%) were revised to TKA at a mean of 49 months, most commonly for lateral compartment OA (47%). 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| subjects | Adult Aged Aged, 80 and over Arthroplasty, Replacement, Knee - methods Female Follow-Up Studies Humans knee arthroplasty Knee Prosthesis Male Metal-on-Metal Joint Prostheses Middle Aged mobile bearing Orthopedics Osteoarthritis, Knee - surgery Oxford knee Postoperative Complications Prosthesis Design Reoperation - statistics & numerical data Retrospective Studies revision Risk Factors Treatment Outcome unicompartmental |
| title | Results of the Oxford Phase 3 Mobile Bearing Medial Unicompartmental Knee Arthroplasty From an Independent Center: 467 Knees at a Mean 6-Year Follow-Up: Analysis of Predictors of Failure |
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