Extracorporeal shock wave therapy for chronic calcific tendinitis of the shoulder: single blind study

Abstract

Objective: To evaluate the clinical and radiological response of chronic calcific tendinitis of the shoulder to extracorporeal shock wave therapy (ESWT) in a single blind study.

Methods: 70 patients showing chronic, symptomatic, calcifying tendinitis of the shoulder were examined. A single blind randomised study was performed with 35 patients undergoing a regular treatment (group 1) and 35 a simulated one (group 2). Pain and functional assessment was carried out according to Constant and Murley. Variations in the dimension of the calcification were evaluated by anteroposterior x ray films.

Results: A significant decrease of pain and a significant increase in shoulder function was seen in group 1. Examination by x ray showed partial resorption of the calcium deposits in 40% of cases and complete resorption in 31% of cases in group 1. In the control group no significant decrease of pain and no significant increase in shoulder function was seen. No modifications were observed by x ray examination.

Conclusion: Because of its good tolerance, safety, and clinical radiological response, ESWT can be considered as an alternative treatment for chronic calcific tendinitis of the shoulder.

Figure 1

Mean Constant score before extracorporeal shock wave treatment (ESWT), after ESWT, and one and six months later. *p<0.001, group 1 v group 2; †p<0.001 group 1, baseline v after ESWT, after one month, and after six months.

Figure 2

Radiograph of the shoulder before ESWT.

Figure 3

The same patient as in fig 2 one month after the end of the treatment.