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利用连续被动运动中的足部负荷估算胫股关节接触力。

Estimation of Tibiofemoral Joint Contact Forces Using Foot Loads during Continuous Passive Motions.

机构信息

State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China.

Orthopaedical Rehabilitation Centre, Weihai Municipal Hospital, Weihai 264209, China.

出版信息

Sensors (Basel). 2022 Jun 30;22(13):4947. doi: 10.3390/s22134947.

DOI:10.3390/s22134947
PMID:35808441
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9269803/
Abstract

Continuous passive motion (CPM) machines are commonly used after various knee surgeries, but information on tibiofemoral forces (TFFs) during CPM cycles is limited. This study aimed to explore the changing trend of TFFs during CPM cycles under various ranges of motion (ROM) and body weights (BW) by establishing a two-dimensional mathematical model. TFFs were estimated by using joint angles, foot load, and leg−foot weight. Eleven healthy male participants were tested with ROM ranging from 0° to 120°. The values of the peak TFFs during knee flexion were higher than those during knee extension, varying nonlinearly with ROM. BW had a significant main effect on the peak TFFs and tibiofemoral shear forces, while ROM had a limited effect on the peak TFFs. No significant interaction effects were observed between BW and ROM for each peak TFF, whereas a strong linear correlation existed between the peak tibiofemoral compressive forces (TFCFs) and the peak resultant TFFs (R2 = 0.971, p < 0.01). The proposed method showed promise in serving as an input for optimizing rehabilitation devices.

摘要

连续被动运动（CPM）机器在各种膝关节手术后通常被广泛使用，但有关 CPM 周期中胫股力（TFF）的信息有限。本研究旨在通过建立二维数学模型来探讨在不同运动范围（ROM）和体重（BW）下 CPM 周期中 TFF 的变化趋势。通过使用关节角度、足部负荷和腿-足重量来估计 TFF。11 名健康男性参与者在 0°至 120°的 ROM 范围内进行了测试。在膝关节弯曲过程中，TFF 的峰值高于膝关节伸展过程中的峰值，并且与 ROM 呈非线性变化。BW 对 TFF 峰值和胫股剪切力有显著的主效应，而 ROM 对 TFF 峰值的影响有限。对于每个 TFF 的峰值，BW 和 ROM 之间没有观察到显著的交互作用，但 TFF 的峰值与峰值胫股压缩力（TFCF）之间存在很强的线性相关性（R2 = 0.971，p < 0.01）。该方法有望作为优化康复设备的输入。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8888/9269803/c0f3b398554f/sensors-22-04947-g008.jpg
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