REVIEW article
Front. Surg.
Sec. Orthopedic Surgery
Volume 12 - 2025 | doi: 10.3389/fsurg.2025.1616382
This article is part of the Research TopicBeyond Standardization in Knee Surgery: Time to Think PersonalizedView all articles
Comparison of Early Outcomes Between Unicompartmental and Total Knee Arthroplasty in Patients with Anteromedial Compartment Knee Osteoarthritis and Class II Obesity: A Retrospective Case Analysis
Provisionally accepted
- 1School of Clinical Medicine, Shandong Second Medical University, Weifang, China
- 2Department of Orthopedic, Qilu Hospital Dezhou Hospital of Shandong University, Dezhou, China
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Background: This study compared early clinical outcomes of unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA) in patients with anteromedial osteoarthritis (AMOA) and class II obesity during postoperative hospitalization and at 1, 6, and 8 months postoperatively. Methods: A retrospective analysis was conducted on 85 patients with class II obesity who underwent UKA (n=45) or TKA (n=40) between January 2022 and January 2024. Perioperative parameters, including operative time, incision length, hemoglobin and albumin levels on postoperative day 2, and hospital stay, were compared. Functional outcomes were assessed using the visual analog scale (VAS), Hospital for Special Surgery (HSS) knee score, and range of motion (ROM) before surgery and at 1, 6, and 8 months postoperatively. Complication rates were also recorded. Results: All patients completed surgery successfully. The UKA group had significantly shorter operative times, smaller incisions, higher postoperative hemoglobin and albumin levels, and shorter hospital stays (P<0.01). At 1 and 6 months, UKA patients showed better VAS, HSS scores, and ROM (P<0.05). By 8 months, no significant differences remained. Complication rates were lower in the UKA group (2.22%) than in the TKA group (17.5%) (P<0.05). Conclusion: Both UKA and TKA improve pain and function in AMOA patients with class II obesity. However, UKA offers advantages in perioperative recovery, early functional outcomes, and complication rates, supporting its use in appropriately selected patients.
Keywords: Anteromedial osteoarthritis (AMOA), class II obesity, Unicompartmental knee arthroplasty (UKA), Total knee arthroplasty (TKA), early functional outcomes
Received: 22 Apr 2025; Accepted: 21 Jul 2025.
Copyright: © 2025 Li, Zhai, Mu and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Qingwei Li, School of Clinical Medicine, Shandong Second Medical University, Weifang, China
Zongyou Mu, Department of Orthopedic, Qilu Hospital Dezhou Hospital of Shandong University, Dezhou, China
Xubin Zhang, Department of Orthopedic, Qilu Hospital Dezhou Hospital of Shandong University, Dezhou, China
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.