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CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2023; 58(06): e912-e916
DOI: 10.1055/s-0043-1770980
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Effect of Spinal Correction Surgery on Lower Limb Strength in Idiopathic Adolescent Scoliosis

Article in several languages: português | English
Conrado Torres Laett 
1   Instituto Nacional de Traumatologia e Ortopedia (INTO), Divisão de Ensino e Pesquisa (DIENP), Programa de Pós-Graduação em Ciências Aplicadas ao Sistema Musculoesquelético, Rio de Janeiro, RJ. Brasil.
2   Instituto Nacional de Traumatologia e Ortopedia (INTO), Laboratório de Pesquisa em Fisiologia do Exercício, Divisão de Pesquisa, Rio de Janeiro, RJ, Brasil.
3   Instituto Nacional de Traumatologia e Ortopedia (INTO), Laboratório de Pesquisa Neuromuscular, Divisão de Pesquisa, Rio de Janeiro, RJ, Brasil.
,
Rogério dos Reis Visconti 
1   Instituto Nacional de Traumatologia e Ortopedia (INTO), Divisão de Ensino e Pesquisa (DIENP), Programa de Pós-Graduação em Ciências Aplicadas ao Sistema Musculoesquelético, Rio de Janeiro, RJ. Brasil.
,
Ricardo de Souza Portes Meirelles 
5   Instituto Nacional de Traumatologia e Ortopedia (INTO), Centro de Cirurgia da Coluna, Rio de Janeiro, RJ, Brasil.
,
Lenifran de Matos Santos 
4   Programa de Pós-Graduação em Ciências do Exercício e do Esporte, Universidade Estadual do Rio de Janeiro, RJ, Brasil.
,
Victor Rodrigues Amaral Cossich 
6   Sport Technology Research Lab, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.
,
Sidnei Cavalcante da Silva 
1   Instituto Nacional de Traumatologia e Ortopedia (INTO), Divisão de Ensino e Pesquisa (DIENP), Programa de Pós-Graduação em Ciências Aplicadas ao Sistema Musculoesquelético, Rio de Janeiro, RJ. Brasil.
2   Instituto Nacional de Traumatologia e Ortopedia (INTO), Laboratório de Pesquisa em Fisiologia do Exercício, Divisão de Pesquisa, Rio de Janeiro, RJ, Brasil.
3   Instituto Nacional de Traumatologia e Ortopedia (INTO), Laboratório de Pesquisa Neuromuscular, Divisão de Pesquisa, Rio de Janeiro, RJ, Brasil.
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Abstract

Objectives To analyze the lower limb strength in both untreated and surgically treated adolescent idiopathic scoliosis (AIS) patients and examine its correlation with the distance covered in a six-minute walking test (6MWT).

Methods A total of 88 participants (n = 30 pre-surgery AIS patients, n = 30 post-surgical AIS patients, and n = 28 control) underwent a 6MWT and a muscle strength assessment. The lower limb strength was measured at the knee joint using the knee extension (KE) and knee flexion (KF) peak torque (PT) measurements.

Results The control group covered a greater distance in the TC6 compared to both the pre-surgical (534 ± 67 m) and post-surgical (541 ± 69 m) groups, with a distance of 612 ± 70 m (p < 0.001). No differences were observed in KE PT (pre: 2.1 ± 0.63, post: 2.1 ± 0.7, control: 2.2 ± 0.7 Nm.kg−1, p = 0.67) or KF PT (pre: 1.0 ± 0.3, post: 1.1 ± 0.3, control: 1.1 ± 0.5 Nm.kg−1, p = 0.46). A moderate positive correlation was observed between KE PT and 6MWT distance (r = 0.53, p < 0.001), as well as a low positive correlation for KF PT (r = 0.37, p = 0.003) with 6MWT distance.

Conclusion This study highlights the importance of lower limb maximal strength in the functionality of AIS patients. Our findings suggest that exercise programs aimed at enhancing lower limb strength, especially the KE, could improve the walking capacity of AIS patients. These results provide useful information for designing purposeful exercise programs for AIS patients with walking deficits.

Keywords

adolescent - scoliosis - muscle strength - exercise test

Financial Support

The present survey has not received any specific funding from public, commercial, or not-for-profit funding agencies.


Study developed at the Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brazil.




Publication History

Received: 23 February 2023

Accepted: 27 March 2023

Article published online:
26 September 2023

© 2023. Sociedade Brasileira de Ortopedia e Traumatologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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