Factors affecting the onset and progression of rotator cuff tears in the general population

Tsuyoshi Ichinose,Tsuyoshi Sasaki,Tsutomu Kobayashi,Daisuke Shimoyama,Ryosuke Miyamoto,Hitoshi Shitara,Noritaka Hamano,Hirotaka Chikuda,Atsushi Yamamoto,Masataka Kamiyama,Kenji Takagishi,Tsuyoshi Tajika

doi:10.1038/s41598-020-79867-x

Tsuyoshi Ichinose, Tsuyoshi Sasaki + Show 10 more

Open Access

https://doi.org/10.1038/s41598-020-79867-x

Copy DOI

Abstract

While previous studies have revealed factors affecting the progression of rotator cuff tear (RCT), none have yet described factors affecting its onset. The purpose of this longitudinal observational study was to analyze factors affecting the RCT onset and progression in the general population. The present study included 185 shoulders from 93 participants who completed all the examinations in both 2012 and 2017. Participants received a questionnaire with age, gender, arm dominance, and presence of pain at rest, in motion, and at night. The range of motion (ROM), simple shoulder test (SST) were also examined. Anteroposterior radiograph of the shoulder joint was performed to evaluate the degree of osteoarthritic changes by the Samilson-Prieto (S-P) classification. The degree of RCT was examined by ultrasonography. There were 132 shoulders without RCT and 53 with RCT in 2012. RCT occurred in 21 of 132 shoulders, and the factor affecting the RCT onset was S-P grade 2 osteoarthritic change in 2012 (odds ratio [OR] 10.10). RCT progressed in 22 of 53 shoulders, and the factor affecting RCT progression was the presence of motion pain in 2012 (OR 13.76). These results added new knowledge regarding the natural course of RCT onset and progression.

Highlights

While previous studies have revealed factors affecting the progression of rotator cuff tear (RCT), none have yet described factors affecting its onset
In symptomatic RCT, Yamamoto et al recently reported that a middle-sized tear, a full-thickness tear, and smoking were risk factors associated with RCT p rogression[10], and Kim et al reported that older age, the presence of a subacromial spur, and a full-thickness tear were risk factors[11]
The present study complied with the Declaration of Helsinki, and the study protocols were approved by the Institutional Review Board of Gunma University, and written informed consent was obtained from all participants

Summary

Introduction

While previous studies have revealed factors affecting the progression of rotator cuff tear (RCT), none have yet described factors affecting its onset The purpose of this longitudinal observational study was to analyze factors affecting the RCT onset and progression in the general population. Previous studies have assumed that age1,2, sex3, smoking[4,5], and posture[6] caused RCT Since these studies lacked longitudinal observation, the actual risk factors for RCT onset have been unclear. The purpose of this study was to evaluate longitudinal changes in the morphology and function of the shoulder joint in the general population and to analyze factors associated with the RCT onset and progression

Objectives

Methods

Results

Conclusion