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Extracorporeal Shock Wave Therapy vs. Corticosteroid Local Injection in Shoulder Impingement Syndrome : A Three-Arm
Mohamed H ElGendy1, Mohamed M Mazen, Ahmed Mostafa Saied
1From the Basic Sciences Department, Faculty of Physical Therapy, Cairo University, Cairo, Egypt (MHE, YA); Department of Basic Sciences, Faculty of Physical Therapy, Delta University for Science and Technology, Belqas City, Dakahlia Governorate, Egypt (MMM); Faculty of Medicine, Mansoura University, Mansoura City, Dakahlia Governorate, Egypt (AMS); and Department of Physical Therapy for Basic Sciences, Faculty of Physical Therapy, Ahram Canadian University, Giza, Egypt (MME).
Objective:
The aim of this study was to examine the effects of combining extracorporeal shock wave therapy or local corticosteroid injections with a conventional physical therapy (CPT) program for patients with shoulder impingement syndrome.
Design:
This was a prospective single-blinded, randomized controlled study.
Methods:
Sixty patients with unilateral shoulder impingement syndrome >3 mos were allocated to group A (a 4-wk program of CPT plus a single local corticosteroid injection of 40 mg triamcinolone acetonide mixed with 1% xylocaine, n = 20), group B (CPT only, n = 20), and group C (CPT plus extracorporeal shock wave therapy, 2000 impulses, 0.2-0.3 mJ/mm 2 , one session per week for 3 wks, n = 20). Subacromial space, shoulder pain and disability index, and shoulder range of motion were assessed at baseline and 4 and 12 wks posttreatment.
Results:
There were no between-group differences at 4 wks. At the 12-wk follow-up, no significant differences were found between groups A and B. There was a significant difference in favor of group C compared with group A with the expectation of shoulder internal rotation and subacromial space. Group C was also superior to group B in all outcomes except for subacromial space.
Conclusion:
The addition of extracorporeal shock wave therapy to CPT induced more noticeable intermediate-term effects than CPT plus local corticosteroid injection or CPT alone.
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