Compensation Characteristics of Spinal Sagittal Malalignment According to Pelvic Incidence in Elderly Patients with Degenerative Lumbar Spinal Stenosis

Objective Compensation characteristics of spinal sagittal malalignment according to pelvic incidence (PI) have yet to be elucidated. This study aimed to investigate the difference in compensatory segments according to PI in elderly patients with degenerative lumbar spinal stenosis (DLSS). Methods Th...

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Bibliographic Details
Published in:Orthopaedic surgery 2023-07, Vol.15 (7), p.1884-1892
Main Authors: Wang, Dong‐Fan, Li, Xiang‐Yu, Wang, Wei, Li, Yong‐Jin, Kong, Chao, Lu, Shi‐Bao
Format: Article
Language:English
Subjects:
Back pain
Back surgery
Compensation mechanism
Degenerative disc disease
Degenerative lumbar spinal stenosis
Elderly patients
Kruskal-Wallis test
Pelvic incidence
Posture
Sagittal alignment
Spinal stenosis
Vertebrae
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Summary:Objective Compensation characteristics of spinal sagittal malalignment according to pelvic incidence (PI) have yet to be elucidated. This study aimed to investigate the difference in compensatory segments according to PI in elderly patients with degenerative lumbar spinal stenosis (DLSS). Methods This retrospective study included 196 patients (143 females, 53 males) suffering from DLSS with an average age of 66.73 years in our department. Sagittal parameters were obtained on the whole spinal lateral radiograph, including T1‐T12 slope (T1S‐T12S), Cobb angle (CA) of the functional units of the thoracic spine, thoracic kyphosis (TK), lumbar lordosis (LL), sacral slope (SS), pelvic tilt (PT), PI, the ratio of PT to PI (PT/PI), PI minus LL mismatch (PI‐LL), sagittal vertical axis (SVA). Patients were divided into the low and high PI groups according to the median value of PI. With reference to the value of SVA and PI‐LL, each PI group was further grouped into the balance subgroup (SVA 
ISSN:1757-7853
1757-7861
DOI:10.1111/os.13807