Predictive factors for progression of adolescent idiopathic scoliosis: a 1-year study

Elattar, Enas A.; Saber, Nayera Z.; Farrag, Dina A.

doi:10.4103/1110-161x.163943

Cited by 11 publications

(14 citation statements)

References 23 publications

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“…As the biofeedback posture training also relied on the sEMG signals as feedback for monitoring the posture, it is reasonable to speculate that the training would have significant effects on the participants' sEMG signals after training. Given that asymmetry in paraspinal muscle activity is considered as a prominent risk factor for curve progression [ 10 , 12 ], another more objective outcome measure, i.e., spinal deformity, was measured before and after the training to determine the benefits of the biofeedback posture training. We speculated that reduction in asymmetry of paraspinal muscle activities may have beneficial effects in controlling the curve progression over time.…”

Section: Discussionmentioning

confidence: 99%

“…They showed evident asymmetry in muscle activities between the left and right upper trapezius and latissimus dorsi in the habitual sitting posture [ 7 ]. Greater sEMG values on the convex sides were significantly associated with curve progression for adolescents with AIS [ 10 ]. While most investigators concede that abnormalities in paraspinal muscle activities are likely to be secondary to spinal deformity in AIS [ 11 ], some studies suggest that asymmetry in paraspinal muscle activities may be of value for predicting curve progression [ 10 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

“…Greater sEMG values on the convex sides were significantly associated with curve progression for adolescents with AIS [ 10 ]. While most investigators concede that abnormalities in paraspinal muscle activities are likely to be secondary to spinal deformity in AIS [ 11 ], some studies suggest that asymmetry in paraspinal muscle activities may be of value for predicting curve progression [ 10 , 12 ]. Therefore, posture training to improve the symmetry in paraspinal muscle activities in AIS might reduce the risk of curve progression.…”

Section: Introductionmentioning

confidence: 99%

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Biofeedback Posture Training for Adolescents with Mild Scoliosis

Cheung

Yip

Lai

2022

BioMed Research International

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Adolescent idiopathic scoliosis (AIS) is characterized by uneven shoulders, spinal curvature, and uneven hips, and asymmetry in paraspinal muscle activities is common in AIS. This pilot study was aimed at examining the use of a surface electromyography (sEMG) biofeedback posture training program in adolescents with mild scoliosis ( Cob b ’ s angle < 30 ° ) to attenuate asymmetry in paraspinal muscle activities and control the curve progression. Seven female adolescents (age, 12–14 years) with mild scoliosis ( Cob b ’ s angle < 30 ° ) were recruited. The participants received 30 tailor-made sessions of sEMG biofeedback posture training at a rate of one to two sessions per week for approximately 6 months. The activities of the paraspinal muscles (the trapezius, latissimus dorsi, thoracic erector spinae, and lumbar erector spinae) measured by sEMG during habitual sitting postures and spinal deformity evaluated by 3D ultrasound imaging were compared before and after training. The mean values of the root-mean-square sEMG ratio, an index of symmetry in paraspinal muscle activities of the muscle pairs between the concave and convex sides of the spinal curve, revealed significant asymmetry over the trapezius and lumbar erector spinae before the training (p <0.05). After the training, all seven adolescents achieved relatively more symmetrical paraspinal muscle activities over these two muscle pairs ( p < 0.05 ). In two adolescents, the spinal curvature decreased by 5.7° and 5.6°, respectively, whereas the remaining adolescents showed a minimal curve progression with changes in the spinal curvature controlled under 5°. To conclude, sEMG biofeedback posture training can reduce asymmetry in paraspinal muscle activities and control curve progression in adolescents with mild scoliosis and can potentially be considered an alternative early intervention for muscle reeducation in this cohort.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biofeedback Posture Training for Adolescents with Mild Scoliosis

Cheung

Yip

Lai

2022

BioMed Research International

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“…57 Guo et al 58 showed the decreased EMG activity on the concave side of the paraspinal muscles at rest. 58 Elattar et al 59 showed a correlation between the increase in EMG frequency of the erector on the convex side and the progressive increase in the curvature angle on the amplitude and frequency of the EMG record. 59 Thouin 60 performed electromyographic testing among patients, considering the division into those with scoliosis and scoliotic posture.…”

Section: Dovepressmentioning

confidence: 98%

“…58 Elattar et al 59 showed a correlation between the increase in EMG frequency of the erector on the convex side and the progressive increase in the curvature angle on the amplitude and frequency of the EMG record. 59 Thouin 60 performed electromyographic testing among patients, considering the division into those with scoliosis and scoliotic posture. He noted higher values of amplitude and frequency EMG signals in patients with scoliotic posture on the concave side, while in those suffering from scoliosis, these increased values were noted on the convex side.…”

Section: Dovepressmentioning

confidence: 98%

Relationship Between Electromyographic Frequency of the Erector Spinae and Location, Direction, and Number of Spinal Curvatures in Children with Scoliotic Changes

Wilczyński

Karolak

2021

RMHP

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The aim of the study was to assess the relationship between erector spinae electromyographic frequency (SEMG) and the location, direction and number of spinal curvatures in children with scoliotic changes. Methods: Analysis comprised 103 (42,21%) children with scoliosis and 141 (57.79%) with scoliotic posture. Body posture and the spine were examined using the Diers formetric III 4D optoelectronic method. Electromyographic analysis was performed using a 14-channel Noraxon TeleMyo DTS apparatus. Results: In girls, the highest mean SEMG frequency of the erector spinae, calculated from 16 measurements, occurred in the case of scoliotic posture (Mean = 73.69 Hz), while in boys, the greatest values were noted for scoliosis (Mean = 79.75 Hz). There was a significant correlation between erector spinae SEMG frequency and curvature location, both in the scoliosis group (p = 0.003) and in the group with scoliotic posture (p = 0.04). There was also a significant correlation between SEMG frequency of the erector spinae and direction of the curvature, both in the scoliosis (p = 0.01) and scoliotic posture groups (p = 0.04), as well as between the erector spinae SEMG frequency and the number of spinal curvatures (scoliosis group: p = 0.03; scoliotic posture group: p = 0.03). Conclusion:The study is of applicative value and fills the gap in research on erector spinae SEMG frequency of in low-grade scoliosis among small children. Our research can also be used in research on the etiology and progression scoliosis. Visible disturbances in the erector spinae SEMG frequency (activity and tension) contribute to the development of curvature and testify to the fact that these changes are the primary cause of idiopathic scoliosis. Scoliosis is merely a symptom, an external expression of CNS dysfunction that is not fully recognised. It is also visible on the SEMG record of postural muscles. Our objective is to contribute to creating a future model record for SEMG of the postural muscles, characteristic for children with scoliosis. Then, based on electromyographic examination, it will be possible to identify initial symptoms of scoliosis and start preventive rehabilitation before irreversible bone changes occur.

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