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Zhao J, Luo M, Liang G, Pan J, Han Y, Zeng L, Yang W, Liu J. What Factors Are Associated with Symptomatic Rotator Cuff Tears: A Meta-analysis. Clin Orthop Relat Res 2022; 480:96-105. [PMID: 34424222 PMCID: PMC8673964 DOI: 10.1097/corr.0000000000001949] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 08/02/2021] [Indexed: 01/31/2023]
Abstract
BACKGROUND Rotator cuff tears are common. A previous systematic review reported on factors associated with rotator cuff tears; however, it included relatively few studies and few variables, and in addition, it had considerable heterogeneity. To identify the factors associated with symptomatic rotator cuff tears and to help guide clinicians to potentially modifiable factors, we felt a broader and more inclusive meta-analysis would be useful. QUESTIONS/PURPOSES In this systematic review and meta-analysis, we asked what (1) demographic, (2) disease, and (3) imaging factors are associated with symptomatic rotator cuff tears? METHODS PubMed, Embase, and Web of Science were searched, and the search period were from the inception of each database through February 2021. The keywords included "risk factor," "rotator cuff injury," "rotator cuff tears," and "rotator cuff tendinitis." All comparative studies on symptomatic rotator cuff tears were included. We considered that the diagnosis of rotator cuff tear could be made by any imaging tool (MRI or ultrasound). We considered either partial- or full-thickness tears to be a rotator cuff tear. No language restrictions were applied. Twenty-six articles from 14 countries involving 9809 individuals, consisting of 3164 patients and 6645 controls, were included. The Newcastle-Ottawa Scale and the Agency for Healthcare Research and Quality (AHRQ) scale were used to evaluate the risk of bias of the included studies, and the highest scores were 9 and 11, respectively. The Newcastle-Ottawa Scale was used for retrospective comparative studies, and the AHRQ was used to evaluate prospective comparative studies. The eight retrospective comparative studies we included were scored from 4 to 9. The quality score of the 18 prospective comparative studies ranged from 6 to 9. Publication bias was explored using the Egger test. Heterogeneity was estimated using the I2 value. If there was no heterogeneity (I2 ≤ 50%), a fixed-effects model was used to determine the overall effect size; if there was heterogeneity (I2 > 50%), a random-effects model was used to merge the effect values. A meta-analysis was performed with RevMan 5.3, and the risk ratio (RR) and weighted mean difference of related factors were calculated. RESULTS Our meta-analysis identified the following demographic factors associated with an increased risk of rotator cuff tears: older age (mean difference 3.1 [95% CI 1.4 to 4.8]; p < 0.001), greater BMI (mean difference 0.77 [95% CI 0.37 to 1.17]; p < 0.001), smoking (RR 1.32 [95% CI 1.17 to 1.49]; p < 0.001), dominant arm (RR 1.15 [95% CI 1.06 to 1.24]; p < 0.001), greater height (mean difference 0.9 [95% CI 0.4 to 1.4]; p < 0.001), and heavier weight (mean difference 2.24 [95% CI 0.82 to 3.66]; p = 0.002). Regarding disease factors, we found that traumatic events (RR 1.91 [95% CI 1.40 to 2.54]; p < 0.001) and hypertension (RR 1.50 [95% CI 1.32 to 1.70]; p < 0.001) were associated with symptomatic rotator cuff tears. Regarding imaging factors, we found that the following three factors were associated with symptomatic rotator cuff tears: greater acromion index (mean difference 0.11 [95% CI 0.06 to 0.16]; p < 0.001), greater critical shoulder angle (mean difference 1.9 [95% CI 1.5 to 2.3]; p < 0.001), and smaller glenoid version angle (mean difference -1.3 [95% CI -1.9 to -0.8]; p < 0.001). We found no association between the patient's sex or the presence or absence of thyroid disease and the likelihood of a rotator cuff tear being present. CONCLUSION This study identified several factors associated with symptomatic rotator cuff tears, including blood glucose, blood pressure, weight, and smoking. Clinicians may seek to modify these factors, possibly in patients with symptomatic rotator cuff tears, but also in symptomatic patients who have not yet been diagnosed with rotator cuff tears because there would be no harm or risk associated with modifying any of the factors we identified. Future research should further study whether addressing these factors can delay the progression and size of rotator cuff tears.Level of Evidence Level III, prognostic study.
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Affiliation(s)
- Jinlong Zhao
- The Second School of Clinical Medical Sciences, Guangzhou University of Chinese Medicine, Guagnzhou, China
- Research Team on Bone and Joint Degeneration and Injury, Guangdong Academy of Traditional Chinese Medicine, Guangzhou, China
| | - Minghui Luo
- Research Team on Bone and Joint Degeneration and Injury, Guangdong Academy of Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, China
| | - Guihong Liang
- Research Team on Bone and Joint Degeneration and Injury, Guangdong Academy of Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, China
| | - Jianke Pan
- Research Team on Bone and Joint Degeneration and Injury, Guangdong Academy of Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, China
| | - Yanhong Han
- Research Team on Bone and Joint Degeneration and Injury, Guangdong Academy of Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, China
| | - Lingfeng Zeng
- Research Team on Bone and Joint Degeneration and Injury, Guangdong Academy of Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, China
| | - Weiyi Yang
- Research Team on Bone and Joint Degeneration and Injury, Guangdong Academy of Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, China
| | - Jun Liu
- Research Team on Bone and Joint Degeneration and Injury, Guangdong Academy of Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, China
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Zhao J, Luo M, Liang G, Wu M, Pan J, Zeng LF, Yang W, Liu J. Risk Factors for Supraspinatus Tears: A Meta-analysis of Observational Studies. Orthop J Sports Med 2021; 9:23259671211042826. [PMID: 34660827 PMCID: PMC8516389 DOI: 10.1177/23259671211042826] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 06/08/2021] [Indexed: 12/19/2022] Open
Abstract
Background: The pathogenesis of rotator cuff tears remains unclear, and there is a lack of high-quality evidence-based research on the risk factors for supraspinatus tears. Purpose: To explore 10 potential risk factors for supraspinatus muscle tears. Study Design: Systematic review; Level of evidence, 3. Methods: This review was conducted according to the MOOSE (Meta-analysis Of Observational Studies in Epidemiology) guidelines. PubMed, Embase, and Web of Science were searched for cohort, case-control and cross-sectional studies published before January 2021 on supraspinatus tears. The following potential risk factors were analyzed: age, body mass index, male sex, female sex, arm dominance, diabetes mellitus, smoking, hypertension, thyroid disease, and the critical shoulder angle (CSA). Risk ratios (RRs) or weighted mean differences (WMDs) of related risk were calculated. The Egger test was used to evaluate publication bias. Results: A total of 9 articles from 8 countries were included; among the 3240 patients, 687 were included in the supraspinatus tear group, and 2553 were included in the nonsupraspinatus tear group. The meta-analysis showed that older age (WMD, 3.36 [95% confidence interval (CI), 0.53-6.20]; P = .02), male sex (RR, 0.87 [95% CI, 0.78-0.97]; P = .01), smoking (RR, 2.21 [95% CI, 1.56-3.14]; P < .00001), diabetes (RR, 1.67 [95% CI, 1.03-2.70]; P = .04), hypertension (RR, 1.51 [95% CI, 1.16-1.97]; P = .002), and the CSA (WMD, 2.25 [95% CI, 1.39-3.12]; P < .00001) were risk factors for supraspinatus tears. Conclusion: Older age, male sex, smoking, diabetes, hypertension, and a higher CSA were found to be risk factors for supraspinatus tears in this meta-analysis review. Identifying risk factors for supraspinatus tears early can help clinicians identify these high-risk patients and choose appropriate treatments.
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Affiliation(s)
- Jinlong Zhao
- The Second School of Clinical Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China.,Guangdong Academy of Traditional Chinese Medicine, Research Team on Bone and Joint Degeneration and Injury, Guangzhou, People's Republic of China
| | - Minghui Luo
- Guangdong Academy of Traditional Chinese Medicine, Research Team on Bone and Joint Degeneration and Injury, Guangzhou, People's Republic of China.,The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, People's Republic of China
| | - Guihong Liang
- Guangdong Academy of Traditional Chinese Medicine, Research Team on Bone and Joint Degeneration and Injury, Guangzhou, People's Republic of China.,The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, People's Republic of China
| | - Ming Wu
- The Second School of Clinical Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China.,Guangdong Academy of Traditional Chinese Medicine, Research Team on Bone and Joint Degeneration and Injury, Guangzhou, People's Republic of China
| | - Jianke Pan
- Guangdong Academy of Traditional Chinese Medicine, Research Team on Bone and Joint Degeneration and Injury, Guangzhou, People's Republic of China.,The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, People's Republic of China
| | - Ling-Feng Zeng
- Guangdong Academy of Traditional Chinese Medicine, Research Team on Bone and Joint Degeneration and Injury, Guangzhou, People's Republic of China.,The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, People's Republic of China
| | - Weiyi Yang
- Guangdong Academy of Traditional Chinese Medicine, Research Team on Bone and Joint Degeneration and Injury, Guangzhou, People's Republic of China.,The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, People's Republic of China
| | - Jun Liu
- Guangdong Academy of Traditional Chinese Medicine, Research Team on Bone and Joint Degeneration and Injury, Guangzhou, People's Republic of China.,The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Province Hospital of Traditional Chinese Medicine), Guangzhou, People's Republic of China.,Guangdong Second Traditional Chinese Medicine Hospital (Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine), Guangzhou, People's Republic of China
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