[Correlation analysis of Cobb angle and linear spinous process angle in adolescent idiopathic scoliosis]

Xiao-Ming Ying; Li-Jiang Lyu; Hao-Yang Zhang; Ying-Sen Pan; Shuai-Lin Li; Xiao-Ming Li; Xin Ye; Chao Yang; Li-Lan He

doi:10.12200/j.issn.1003-0034.2023.10.008

[Correlation analysis of Cobb angle and linear spinous process angle in adolescent idiopathic scoliosis]

Zhongguo Gu Shang. 2023 Oct 25;36(10):949-53. doi: 10.12200/j.issn.1003-0034.2023.10.008.

[Article in Chinese]

Authors

Xiao-Ming Ying¹, Li-Jiang Lyu², Hao-Yang Zhang², Ying-Sen Pan², Shuai-Lin Li¹, Xiao-Ming Li¹, Xin Ye¹, Chao Yang¹, Li-Lan He³

Affiliations

¹ Tuina Department, the 3rd Hospital Affiliated to Chejiang University of Trditional Chinese Medicine, Hangzhou 310004, Zhejiang, China.
² The 3rd Clinical Medical College of ZCMU, Hangzhou 310053, Zhejiang, China.
³ Ultrasonic Department, the 3rd Hospital Affiliated to Chejiang University of Trditional Chinese Medicine, Hangzhou 310004, Zhejiang, China.

PMID: 37881927
DOI: 10.12200/j.issn.1003-0034.2023.10.008

Abstract

Objective: To analyze the correlation between Cobb angle and spinous process angle (SPA) on X-ray film and body surface in patients with mild to moderate adolescent idiopathic scoliosis(AIS). To explore the possibility of linear SPA to assess scoliosis.

Methods: Retrospective study for correlation of Cobb angle and linear SPA on X-ray film. AIS patients treated and taken full spine anteroposterior X-ray from January 2019 to December 2021 were analyzed correlation of Cobb angle and linear SPA on X-ray film. Prospective study for correlation of Cobb angle and body linear SPA. AIS patients treated and taken full spine anteroposterior X-ray from December 1 to December 9 this year were analyzed correlation of Cobb angle and body linear SPA.

Results: A total of 113 AIS patients with age an average of (14.02±2.16) years old(ranged from 10 to 18 years old) were recruited in retrospective study, involving 26 males and 87 females;there were 71 patients with mild AIS and 42 patients with moderate AIS. Cobb angle in AIS patients was significantly inversely associated with SPA(r=-0.564, P<0.001), the linear regression equation was:Cobb angle=169.444-0.878×SPA. Cobb angles in patients with mild scoliosis were significantly and inversely associated with SPA(r=-0.269, P=0.012), the linear regression equation was:Cobb angle=46.832-0.185×SPA. Cobb angles in patients with moderate scoliosis were also clearly correlated with SPA(r=-0.417, P=0.003), the linear regression equation was:Cobb angle=113.889-0.516×SPA. Thirty-eight patients were recruited in prospective study. The mean Cobb angle and body linear SPA were(18.70±6.98)°, ranged from 11.3° to 36.0° and (170.34±4.57)°, ranged from 162.1° to 177.7° respectively. There was significantly negative correlation(r=-0.651, P<0.001), the linear regression equation is:Cobb angle=187.91-0.99×SPA.

Conclusion: Linear SPA on X-ray film or on the body was significantly negatively correlated with Cobb angles, but the regression equation fits poorly, so it's not suitable for diagnosis of scoliosis;however, linear SPA is appropriate for self-controlled assessment of scoliotic therapy or for dynamic assessment of spinal flexibility.

Keywords: Adolescent idiopathic scoliosis; Cobb angle; Correlation analysis; Spinous process angle.

Publication types

English Abstract

MeSH terms

Adolescent
Child
Female
Humans
Kyphosis*
Male
Prospective Studies
Retrospective Studies
Scoliosis* / diagnostic imaging
Spine / diagnostic imaging