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Evidence for minimally invasive therapies in the management of chronic calcific tendinopathy of the rotator cuff: a systematic review and meta-analysis
Louwerens JKG, Sierevelt IN, van Noort A, van den Bekerom MPJ
Journal of Shoulder and Elbow Surgery 2014 Aug;23(8):1240-1249
systematic review

BACKGROUND: This meta-analysis assessed the short-term to midterm effectiveness of minimally invasive treatments in the management of calcifying tendinopathy of the shoulder cuff, a common source of chronic shoulder pain that leads to pain, a decreased active range of motion, and loss of muscular strength. When conservative therapies fail, minimally invasive treatment options can be considered before resulting to surgery. MATERIALS AND METHODS: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed to conduct this review. A systematic literature search was conducted in May 2013 to identify all studies that examined the short-term to midterm effectiveness of minimally invasive treatments for chronic calcifying tendinopathy. The primary end points were identified as function, pain, and total resorption rates. Grades of Recommendation Assessment, Development and Evaluation (GRADE) was used to assess the quality of evidence. RESULTS: Included were 20 studies (1,544 participants). Common methodological flaws were related to randomization. In general, there is moderate-quality GRADE evidence that high-energy extracorporeal shockwave therapy has a significant effect on pain relief and functional status compared with other interventions. There is variable-quality GRADE evidence on the efficiency of other interventions. CONCLUSION: High-energy extracorporeal shockwave therapy is the most thoroughly investigated minimally invasive treatment option in the short-term to midterm and has proven to be a safe and effective treatment. Ultrasound-guided needling is safe but has not been proven to be more effective than an ultrasound-guided subacromial corticosteroid injection in recent level I research, and further research will have to prove its effectiveness. LEVEL OF EVIDENCE: Level II, meta-analysis.

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