Dynamic feature of infrapatellar fat pad during walking in patients with knee osteoarthritis.

IF 1.9 4区医学 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Journal of Medical Ultrasonics Pub Date : 2025-04-01 Epub Date: 2025-02-22 DOI:10.1007/s10396-025-01518-3

Miharu Sugimoto, Yosuke Ishii, Yuko Nakashima, Goki Kamei, Akinori Nekomoto, Takato Hashizume, Riko Okinaka, Kohei Matsumura, Makoto Takahashi, Nobuo Adachi

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引用次数: 0

Abstract

Purpose: The infrapatellar fat pad (IFP) absorbs mechanical stress in the knee joint owing to flexible morphological changes. The IFP is a key factor in knee osteoarthritis (OA); however, its dynamic feature during walking remains unknown. This study aimed to investigate whether the morphological changes in the IFP during walking involve specific features for patients with knee OA.

Methods: Twelve patients with knee OA, 12 healthy young volunteers, and 12 healthy elderly volunteers were recruited. The IFP was evaluated using ultrasonography, and dynamics were recorded in video mode during walking. The IFP value was identified as the thickness between the patellar tendon and proximal tibial line. The morphological change in the IFP (ΔIFP) was shown as the difference in IFP value between maximum and at initial contact on the waveform. Kinematics and kinetics data were evaluated using a three-dimensional motion analysis system synchronized with ultrasonography, and the knee flexion angle and its moment in the stance phase were evaluated.

Results: In the patients with knee OA, the ΔIFP was lower than that in healthy volunteers, but there was no difference between control groups (knee OA: 1.4 ± 0.3 mm, elderly control: 1.8 ± 0.2 mm, young control: 2.1 ± 0.5 mm, p < 0.05). In all the groups, there was no significant correlation between the IFP values and kinetic parameters, including the range of knee flexion angles and gait speed.

Conclusion: Insufficient morphological changes in the IFP during walking could be a feature of knee OA.

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膝骨关节炎患者行走时髌骨下脂肪垫的动态特征。

目的：髌下脂肪垫（IFP）由于形态变化灵活，吸收膝关节内的机械应力。IFP是膝关节骨性关节炎（OA）的关键因素；然而，其在行走过程中的动态特性尚不清楚。本研究旨在探讨膝关节OA患者步行时IFP的形态学变化是否涉及特定特征。方法：招募膝关节OA患者12例，健康青年志愿者12例，健康老年志愿者12例。使用超声检查评估IFP，并在行走过程中以视频模式记录动态。IFP值被确定为髌腱和胫骨近端线之间的厚度。IFP的形态变化（ΔIFP）显示为波形上最大和初始接触时IFP值的差异。采用与超声同步的三维运动分析系统对运动学和动力学数据进行评估，并评估膝关节在站立阶段的屈曲角度及其力矩。结果：膝关节OA患者的ΔIFP低于健康志愿者，但对照组之间无差异（膝关节OA: 1.4±0.3 mm，老年人对照组：1.8±0.2 mm，年轻人对照组：2.1±0.5 mm, p）。结论：步行时IFP形态学改变不足可能是膝关节OA的一个特征。

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

Journal of Medical Ultrasonics 医学-核医学

CiteScore

3.30

自引率

11.10%

发文量

102

审稿时长

>12 weeks

期刊介绍： The Journal of Medical Ultrasonics is the official journal of the Japan Society of Ultrasonics in Medicine. The main purpose of the journal is to provide forum for the publication of papers documenting recent advances and new developments in the entire field of ultrasound in medicine and biology, encompassing both the medical and the engineering aspects of the science.The journal welcomes original articles, review articles, images, and letters to the editor.The journal also provides state-of-the-art information such as announcements from the boards and the committees of the society.