Survival of medial versus lateral unicompartmental knee arthroplasty: A meta-analysis.
Many studies have found associations between unicompartmental knee arthroplasty (UKA) and implant survival, but controversy still exists regarding the relative survival of medial versus lateral UKA over mid-to long-term follow-up. The purpose of this study was to compare survival and clinical outcom...
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2020-01-01
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| Series: | PLoS ONE |
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| author | Seung-Beom Han Sang-Soo Lee Kyoung-Ho Kim Jung-Taek Im Phil-Sun Park Young-Soo Shin |
| author_facet | Seung-Beom Han Sang-Soo Lee Kyoung-Ho Kim Jung-Taek Im Phil-Sun Park Young-Soo Shin |
| author_sort | Seung-Beom Han |
| collection | DOAJ |
| description | Many studies have found associations between unicompartmental knee arthroplasty (UKA) and implant survival, but controversy still exists regarding the relative survival of medial versus lateral UKA over mid-to long-term follow-up. The purpose of this study was to compare survival and clinical outcomes of medial and lateral UKAs. In this meta-analysis, we reviewed studies that assessed implant survival in patients who underwent medial or lateral UKA with short- to mid-term (<10years) or long-term (>10years) follow-up, and that used assessments, such as pain and function scores, to compare postoperative scores on knee outcome scales. A total of eight studies (33,999 knees with medial UKA and 2,853 with lateral UKA) met the inclusion criteria and was analyzed in detail. There were no significant differences between medial and lateral UKA in pain score (95% CI: -0.37 to 0.88; P = 0.42), function score (95% CI: -0.19 to 0.60; P = 0.31), short- to mid-term survival (medial, 32,083/33,483; lateral, 2,636/2,726; OR 0.98, 95% CI: 0.64 to 1.48;P = 0.91), or long-term survival (medial, 479/516; lateral, 110/127; OR 2.51, 95% CI:0.67 to 9.43; P = 0.17). In addition, both groups had substantial proportions of knees with short- to mid-term survival (95.6% by medial UKA and 94.6% by lateral UKA) and long-term survival (92.8% by medial UKA and 86.6% by lateral UKA). This meta-analysis found no significant differences in short- to mid-term and long-term survival of medial and lateral UKAs. Similarly, patients treated with medial UKA showed no difference in pain relief or functional improvement compared to patients treated with lateral UKA. These results suggest that both UKA techniques are viable treatment options for patients with unicompartmental knee osteoarthritis over long-term follow-up, although further high-quality studies are needed to address some remaining uncertainties regarding the clinical benefits of these procedures. |
| format | Article |
| id | doaj-art-225d01e5c9f04890b32a584b93ddb00a |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Public Library of Science (PLoS) |
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| spelling | doaj-art-225d01e5c9f04890b32a584b93ddb00a2025-08-20T02:00:45ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-01151e022815010.1371/journal.pone.0228150Survival of medial versus lateral unicompartmental knee arthroplasty: A meta-analysis.Seung-Beom HanSang-Soo LeeKyoung-Ho KimJung-Taek ImPhil-Sun ParkYoung-Soo ShinMany studies have found associations between unicompartmental knee arthroplasty (UKA) and implant survival, but controversy still exists regarding the relative survival of medial versus lateral UKA over mid-to long-term follow-up. The purpose of this study was to compare survival and clinical outcomes of medial and lateral UKAs. In this meta-analysis, we reviewed studies that assessed implant survival in patients who underwent medial or lateral UKA with short- to mid-term (<10years) or long-term (>10years) follow-up, and that used assessments, such as pain and function scores, to compare postoperative scores on knee outcome scales. A total of eight studies (33,999 knees with medial UKA and 2,853 with lateral UKA) met the inclusion criteria and was analyzed in detail. There were no significant differences between medial and lateral UKA in pain score (95% CI: -0.37 to 0.88; P = 0.42), function score (95% CI: -0.19 to 0.60; P = 0.31), short- to mid-term survival (medial, 32,083/33,483; lateral, 2,636/2,726; OR 0.98, 95% CI: 0.64 to 1.48;P = 0.91), or long-term survival (medial, 479/516; lateral, 110/127; OR 2.51, 95% CI:0.67 to 9.43; P = 0.17). In addition, both groups had substantial proportions of knees with short- to mid-term survival (95.6% by medial UKA and 94.6% by lateral UKA) and long-term survival (92.8% by medial UKA and 86.6% by lateral UKA). This meta-analysis found no significant differences in short- to mid-term and long-term survival of medial and lateral UKAs. Similarly, patients treated with medial UKA showed no difference in pain relief or functional improvement compared to patients treated with lateral UKA. These results suggest that both UKA techniques are viable treatment options for patients with unicompartmental knee osteoarthritis over long-term follow-up, although further high-quality studies are needed to address some remaining uncertainties regarding the clinical benefits of these procedures.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0228150&type=printable |
| spellingShingle | Seung-Beom Han Sang-Soo Lee Kyoung-Ho Kim Jung-Taek Im Phil-Sun Park Young-Soo Shin Survival of medial versus lateral unicompartmental knee arthroplasty: A meta-analysis. PLoS ONE |
| title | Survival of medial versus lateral unicompartmental knee arthroplasty: A meta-analysis. |
| title_full | Survival of medial versus lateral unicompartmental knee arthroplasty: A meta-analysis. |
| title_fullStr | Survival of medial versus lateral unicompartmental knee arthroplasty: A meta-analysis. |
| title_full_unstemmed | Survival of medial versus lateral unicompartmental knee arthroplasty: A meta-analysis. |
| title_short | Survival of medial versus lateral unicompartmental knee arthroplasty: A meta-analysis. |
| title_sort | survival of medial versus lateral unicompartmental knee arthroplasty a meta analysis |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0228150&type=printable |
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