Table 1.

Search strategy

Population	Patients with radiographically confirmed symptomatic tendinitis calcarea of the shoulder (search terms: shoulder joint, rotator cuff, shoulder, supraspinatus, infraspinatus, subscapular or teres, impingement syndrome, tendinopathy, tendonitis or tendinitis, tendinosis, calcinosis, calcifying, calcification, calcified, calcific, calcarea)
Intervention	High-energy extracorporeal shock wave therapy (search terms: shock wave, ESWT, ESWL, radiofrequency, HESWT, high-energy, high-intensity, high, high EFD, shock waved therapy, extra corporeal shock wave therapy, radiation nonionizing)
Comparison	Low-energy extracorporeal shock wave therapy (search terms: shock wave, ESWT, ESWL, radiofrequency, LESWT, low-energy, low-intensity, low, low EFD, shock waved therapy, extra corporeal shock wave therapy, radiation nonionizing)
Outcome	Functional outcome and radiologic outcome
Limits	Language: English, German, Dutch Publication years: 1990-February 2013 Study population: humans

ESWT = extracorporeal shock wave therapy; ESWL – extracorporeal shock wave lithotripsy; HESWT = high-energy shock wave therapy; EFD = energy flux density; LESWT = low-energy shock wave therapy.