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Fixed-Bearing Unicompartmental Knee Arthroplasty in Tibia Vara Knees Results in Joint Surface Malalignment and Varus Joint Line Obliquity, but Does Not Affect Functional Outcomes at Greater Than 5 Years Follow-Up

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dc.contributor.authorPark, DY-
dc.contributor.authorPark, KH-
dc.contributor.authorJin, YJ-
dc.contributor.authorYun, HW-
dc.contributor.authorLee, JM-
dc.contributor.authorChung, JY-
dc.contributor.authorPark, JY-
dc.contributor.authorMin, BH-
dc.contributor.authorLim, S-
dc.date.accessioned2024-03-14T04:52:28Z-
dc.date.available2024-03-14T04:52:28Z-
dc.date.issued2024-
dc.identifier.issn0883-5403-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/32316-
dc.description.abstractBackground: This study aimed to investigate the clinical outcomes of fixed-bearing medial unicompartmental knee arthroplasty (UKA) for tibia vara knees and the associated changes in joint space malalignment (JSM) and joint line obliquity (JLO). Methods: We retrospectively analyzed a consecutive group of 100 patients who underwent fixed-bearing medial UKA with a preoperative medial proximal tibia angle (MPTA) ≥86° (n = 50) and MPTA <86° (n = 50) and who had a minimum 5-year follow-up. Radiological parameters, including the hip-knee-ankle angle, MPTA, and the postoperative JSM and JLO, were measured. Functional evaluation was performed using the range of motion, visual analog scale, Knee Society Knee Score, Knee Society Function Score, and Western Ontario and McMaster Universities Osteoarthritis Index score. Results: The MPTA <86° group showed significantly higher postoperative JLO (91.8 versus 90.4°, respectively; P = .002) and JSM (6.1 versus 4.2°, respectively; P = .026) compared to the MPTA ≥86° group. Functional outcomes, including range of motion, visual analog scale, Knee Society Knee Score, Knee Society Function Score, and Western Ontario and McMaster Universities Osteoarthritis Index scores, were not significantly different between the 2 groups. Conclusions: Fixed-bearing medial UKA is a safe and effective surgical option for patients who have tibia vara knees, as an increase in JLO and JSM postoperatively does not have a clinically relevant impact, even after a minimum 5-year follow-up.-
dc.language.isoen-
dc.subject.MESHArthroplasty, Replacement, Knee-
dc.subject.MESHBone Diseases, Developmental-
dc.subject.MESHFollow-Up Studies-
dc.subject.MESHHumans-
dc.subject.MESHKnee Joint-
dc.subject.MESHOsteoarthritis, Knee-
dc.subject.MESHOsteochondrosis-
dc.subject.MESHRetrospective Studies-
dc.subject.MESHTibia-
dc.titleFixed-Bearing Unicompartmental Knee Arthroplasty in Tibia Vara Knees Results in Joint Surface Malalignment and Varus Joint Line Obliquity, but Does Not Affect Functional Outcomes at Greater Than 5 Years Follow-Up-
dc.typeArticle-
dc.identifier.pmid37757984-
dc.subject.keywordjoint line obliquity-
dc.subject.keywordjoint space malalignment-
dc.subject.keywordmedial proximal tibia angle-
dc.subject.keywordtibia vara-
dc.subject.keywordunicompartmental knee arthroplasty-
dc.contributor.affiliatedAuthorPark, DY-
dc.contributor.affiliatedAuthorYun, HW-
dc.contributor.affiliatedAuthorChung, JY-
dc.contributor.affiliatedAuthorLim, S-
dc.type.localJournal Papers-
dc.identifier.doi10.1016/j.arth.2023.09.024-
dc.citation.titleThe Journal of arthroplasty-
dc.citation.volume39-
dc.citation.number3-
dc.citation.date2024-
dc.citation.startPage645-
dc.citation.endPage650-
dc.identifier.bibliographicCitationThe Journal of arthroplasty, 39(3). : 645-650, 2024-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.identifier.eissn1532-8406-
dc.relation.journalidJ008835403-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Orthopedic Surgery
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