Rectus femoris electromyography signal clustering

• Verfasst von: Davoudi, Mehrdad [VerfasserIn]
• Verfasst von: Salami, Firooz [VerfasserIn]
• Verfasst von: Reisig, Robert [VerfasserIn]
• Verfasst von: Patikas, Dimitrios A. [VerfasserIn]
• Verfasst von: Wolf, Sebastian Immanuel [VerfasserIn]
• Titel: Rectus femoris electromyography signal clustering
• Titelzusatz: data-driven management of crouch gait in patients with cerebral palsy
• Verf.angabe: Mehrdad Davoudi, Firooz Salami, Robert Reisig, Dimitrios A. Patikas, Sebastian I. Wolf
• E-Jahr: 2024
• Jahr: August 20, 2024
• Umfang: 13 S.
• Illustrationen: Illustrationen
• Fussnoten: Gesehen am 20.09.2024
• Titel Quelle: Enthalten in: PLOS ONE
• Ort Quelle: San Francisco, California, US : PLOS, 2006
• Jahr Quelle: 2024
• Band/Heft Quelle: 19(2024), 8, Artikel-ID e0298945, Seite 1-13
• ISSN Quelle: 1932-6203
• DOI: doi:10.1371/journal.pone.0298945
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Algorithms
• Sach-SW: Electromyography
• Sach-SW: Gait analysis
• Sach-SW: k means clustering
• Sach-SW: Kinematics
• Sach-SW: Knee joints
• Sach-SW: Knees
• Sach-SW: Surgical and invasive medical procedures
• K10plus-PPN: 1903044154

Abstract

This study aimed to investigate how electromyography (EMG) cluster analysis of the rectus femoris (RF) could help to better interpret gait analysis in patients with cerebral palsy (CP). The retrospective gait data of CP patients were categorized into two groups: initial examination (E1, 881 patients) and subsequent examination (E2, 377 patients). Envelope-formatted EMG data of RF were collected. Using PCA and a combined PSO-K-means algorithm, main clusters were identified. Patients were further classified into crouch, jump, recurvatum, stiff and mild gait for detailed analysis. The clusters (labels) were characterized by a significant peak EMG activity during mid-swing (L1), prolonged EMG activity during stance (L2), and a peak EMG activity during loading response (L3). Notably, L2 contained 76% and 92% of all crouch patients at E1 and E2, respectively. Comparing patients with a crouch gait pattern in L2-E1 and L2-E2, two subgroups emerged: patients with persistent crouch (G1) and patients showing improvement at E2 (G2). The minimum activity of RF during 20-45% of the gait was significantly higher (p = 0.025) in G1 than in G2. A greater chance of improvement from crouch gait might be associated with lower RF activity during the stance phase. Using our findings, we could potentially establish an approach to improve clinical decision-making regarding treatment of patients with CP.