The Influence of Long-term Shoulder Loading on Sagittal Spino-pelvic Morphology: a Population-based Retrospective Study of Chinese Farmers from Radiology

Overview

Journal J Orthop Surg Res

Publisher Biomed Central

Specialty Orthopedics

Date 2020 May 31

PMID 32471454

Citations 2

Authors

Xuyang Zhang

Wei Yang

Zeyu Zheng

Jiasheng Wang

Bao Huang

Shunwu Fan

Xianjun Wang

Fengdong Zhao

Affiliations

Soon will be listed here.

Abstract

Background: To investigate associations between long-term shoulder loading and sagittal spino-pelvic morphology in Chinese farmers from radiology evidences.

Methods: We retrospectively analyzed 463 back pain patients who attended outpatient and inpatient departments of two hospitals from January 2016 to December 2018, and who had long, standing lateral X-rays according to inclusion and exclusion criteria. One hundred eighty-four of them were farmers with a long history of heavy shoulder loading for over 20 years in their young age, while others were office workers with no reported long-term shoulder loading history. The following parameters were measured by three researchers independently and then analyzed statistically: thoracic kyphosis (TK), lumbar lordosis (LL), thoracolumbar kyphosis (TLK), T9 sagittal offset (T9SO), T1 sagittal offset (T1SO), sacral slope (SS), pelvic incidence (PI), pelvic tilt (PT), C7 tilt (C7T), spino-pelvic angle (SSA), and sagittal vertical axis (SVA).

Results: The "Loading group" included 86 males and 98 females with average age 73.3 (SD 8.3) years, whereas the "Non-loading group" included 126 males and 153 females with average age 63.7 (SD 14.1) years. Age was significantly higher in the loading group (p < 0.001), but gender, height, weight, BMI, and BMD were not significantly different (p > 0.05). The following spino-pelvic parameters were significantly greater (p < 0.05) in the loading group: TK (mean 39.1° vs 32.8°), TLK (25.8° vs 10.1°), and T9SO (12.2° vs 10.1°). Other values were not significantly different between the two groups (p > 0.05).

Conclusion: Long-term shoulder loading in youth is a risk factor for pathological thoracic kyphosis especially in the lower thoracic spinal segments when farmers getting older.

Citing Articles

The Relationship Between Low Back Pain and Sagittal Spinal Alignment and Back Muscle Mass in Korean Fishery Workers.

Kook M, Kim I, Seo J, Kim H, Nam H, Han N Ann Rehabil Med. 2023; 47(6):459-467.

PMID: 37990502 PMC: 10767211. DOI: 10.5535/arm.23075.

A Comparison of Spinopelvic Alignment and Quality of Life between Farmers and Non-Farmers: A Cross-Sectional Population-Based Study in a Japanese Rural Area.

Ogawa T, Fukushima K, Niimi M, Schermann H, Motoyoshi T, Moross J J Clin Med. 2023; 12(4).

PMID: 36835927 PMC: 9966930. DOI: 10.3390/jcm12041393.

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