Effect of Using Mobile Bearing on the Incidence of Anterior Knee Pain in Primary Total Knee Arthroplasty Without Patellar Resurfacing: A Randomized Controlled Clinical Trial.

IF 2.3 Q2 ORTHOPEDICS
JBJS Open Access Pub Date : 2025-05-29 eCollection Date: 2025-04-01 DOI:10.2106/JBJS.OA.25.00007
Hakam Alasaad, Doried Diri, Wael Halloum, Hussain Muhammed, Jaber Ibrahim
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Abstract

Background: Anterior knee pain (AKP) remains a major complication following total knee arthroplasty (TKA). Mobile bearing (MB) is an alternative to fixed bearing (FB), supposing it has theoretical advantages in increasing the range of motion, reducing wear, and reducing anterior knee pain incidence when the patella is not resurfaced.

Materials & methods: This research is a double-blinded, randomized controlled clinical trial, conducted between July 2021 and March 2024. It included 76 patients who underwent unilateral primary total knee arthroplasty without patellar resurfacing. Patients were randomized into 2 groups; the first used a MB, and the second used a FB. Patients were followed for 18 months. The 2 groups were compared based on the incidence and severity of anterior knee pain, knee range of motion, Knee Society Score, and patient satisfaction assessment according to the Forgotten Joint Scale (FJS-12).

Results: AKP occurred in 5 patients in the MB group and 6 in the FB group. We did not find a statistically significant difference between the 2 groups (P = 0.744). However, the severity of anterior knee pain according to the Visual Analog Scale (VAS) in the MB group was statistically significantly lower compared with the FB group (p < 0.05). We did not observe any statistically significant differences between the 2 groups in clinical and functional outcomes, or the complications rate.

Conclusion: Using a MB does not reduce the incidence of anterior knee pain after primary total knee arthroplasty without patellar resurfacing. However, it could contribute to reducing the severity of this pain if it occurs for other reasons. Therefore, we recommend conducting further studies to determine the causes of anterior knee pain.

Level of evidence: Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.

无髌骨置换的原发性全膝关节置换术中使用移动轴承对膝关节前侧疼痛发生率的影响:一项随机对照临床试验。
背景:膝关节前侧疼痛(AKP)仍然是全膝关节置换术(TKA)后的主要并发症。移动轴承(MB)是固定轴承(FB)的替代方案,假设它在理论上具有增加活动范围,减少磨损和减少髌骨未表面修复时膝关节前侧疼痛发生率的优势。材料与方法:本研究为双盲、随机对照临床试验,于2021年7月至2024年3月进行。它包括76例接受单侧原发性全膝关节置换术而没有髌骨置换的患者。患者随机分为两组;第一个使用MB,第二个使用FB。随访18个月。比较两组患者膝关节前侧疼痛的发生率和严重程度、膝关节活动度、膝关节社会评分及遗忘关节量表(FJS-12)患者满意度。结果:MB组5例发生AKP, FB组6例发生AKP。两组间差异无统计学意义(P = 0.744)。但MB组膝关节前疼痛的视觉模拟评分(VAS)明显低于FB组(p < 0.05)。我们没有观察到两组在临床和功能结局或并发症发生率方面有统计学意义的差异。结论:使用MB不能减少无髌骨置换的初次全膝关节置换术后膝关节前侧疼痛的发生率。然而,如果它是由其他原因引起的,它可能有助于减轻这种疼痛的严重程度。因此,我们建议进行进一步的研究以确定膝关节前侧疼痛的原因。证据水平:治疗性i级。参见《作者说明》获得证据水平的完整描述。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
JBJS Open Access
JBJS Open Access Medicine-Surgery
CiteScore
5.00
自引率
0.00%
发文量
77
审稿时长
6 weeks
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