NDLI: Neuromuscular disturbances in adolescent idiopathic scoliosis observed from the anticipatory muscle activations in scapula stabilizers: a cross-sectional study

Content Provider	Springer Nature : BioMed Central
Author	Wang, Yu Xia, Nan Gu, Minghui Chen, Zejian Xu, Jiang Wang, Li Liao, Yi Xie, Lingfeng Huang, Xiaolin
Abstract	Background While it is well-stablished that scoliosis can lead to neuromuscular control disorders, the specific characteristics of these impairments remain unclear. This study aimed to explore the neuromuscular features of scapula stabilizers in adolescents with idiopathic scoliosis (AIS) through an analysis of anticipatory muscle activations (AMAs). Methods A cross-sectional observational study was conducted with 17 AIS and 19 age-matched healthy subjects. Both the AIS and healthy groups performed right and left upper limb reaching tasks at three different heights while surface electromyography monitored the activity of scapular stabilizers. The muscles examined included the bilateral infraspinatus, upper trapezius, lower trapezius, serratus anterior, latissimus dorsi and the anterior deltoid. The incidence, onset latencies, and amplitude of AMAs were compared between the AIS and healthy groups. Results Among scapular stabilizers, ipsilateral upper trapezius (iUT) and ipsilateral infraspinatus (iIS) exhibited the highest AMAs incidence at 72.59% and 70.06%, respectively. However, AMAs incidence significantly declined on the concave side of the thoracic curve in AIS group, particularly in iUT (55.63 ± 14.74 vs. 45.21 ± 19.92, t = 2.330, P = 0.034) and iIS (59.38 ± 20.16 vs. 48.13 ± 22.11, t = 2.316, P = 0.035). Regarding onset latencies, the AIS group exhibited delayed activation of ipsilateral lower trapezius (F = 3.586, P < 0.05, η2p = 0.006) and advanced activation of contralateral upper trapezius (F = 7.753, P < 0.001, η2p = 0.027) and contralateral infraspinatus (F = 6.554, P < 0.01, η2p = 0.024) on concave side compared to the healthy group. Additionally, almost all scapula stabilizers in AIS group exhibited reduction of AMAs amplitude compared to the healthy group. Conclusions This preliminary study suggests potential neuromotor control impairments in the AIS population, as indicated by observed trends in the incidence, amplitude, and timing of AMAs in scapular stabilizers. These preliminary insights may inform the design of future rehabilitation interventions, with attention to neurodevelopmental needs during adolescence. Trial registration number ChiCTR2300075167, Date: 2023-08-28.
Related Links	https://bmcmusculoskeletdisord.biomedcentral.com/counter/pdf/10.1186/s12891-024-08137-y.pdf
Ending Page	12
Page Count	12
Starting Page	1
File Format	HTM / HTML
ISSN	14712474
DOI	10.1186/s12891-024-08137-y
Journal	BMC Musculoskeletal Disorders
Issue Number	1
Volume Number	25
Language	English
Publisher	BioMed Central
Publisher Date	2024-12-19
Access Restriction	Open
Subject Keyword	Orthopedics Rehabilitation Rheumatology Sports Medicine Internal Medicine Epidemiology Adolescent idiopathic scoliosis Anticipatory muscle activation Scapula stabilizers
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Rheumatology
Journal Impact Factor	2.2/2023
5-Year Journal Impact Factor	2.6/2023

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