Background: Comparison of intra-articular corticoid injections and oral corticosteroids in the treatment of adhesive capsulitis of the shoulder

Methods: In a prospective randomized evaluation two different treatment regimen were compared. 40 patients with idiopathic adhesive capsulitis of the shoulder were treated either with an oral (20) corticoid treatment regimen for 4 weeks or intra-articular (20) injection series of corticosteroids (3 injections- 4, 8, 12 weeks).Patient groups were comparable in sex, age and affected side. Follow-up periods were after 4,8,12 weeks, 6 and 12 months. For the clinical evaluation the Constant and Murley Score, the Simple Shoulder Test and visual analog scales for pain, function and satisfaction were used.

Results: In the patients group treated with oral glucocorticoids significant improvements were found for the Constant and Murley Score (p< .0001), the Simple Shoulder Test (p=.035) and range of motion for flexion (p< .0001), abduction (p< .0001), external (p=.001) and internal rotation (p=.028) already at 4 weeks follow-up. The visual analog scales for pain, function and patient satisfaction also improved significantly after 4 weeks of treatment (p< .0001).)

The patient group treated with an intra-articular glucocorticoid injection series also showed significant improvements for the Constant and Murley Score (p< .0001), the Simple Shoulder Test (p< .0001) and the visual analog scales for pain, function and patient satisfaction (p< .0001) after 4 weeks and also at any other follow up. Significant improvements were also seen in abduction (p< .0001), flexion (p< .0001) and external rotation (p=.001) and internal rotation (p=.035) after 4 weeks of treatment. These results were confirmed at any other follow up.

Comparison of the two treatment regimen showed superior short term results for the intra-articular treatment regimen in range of motion, Constant Score and Simple Shoulder Test and patient satisfaction (p< .05). No significant differences were found in the visual analog scales for pain and function (p> .05).

Conclusion: The use of cortisone in the treatment of idiopathic adhesive capsulitis of the shoulder leads to fast pain relief and improves range of motion. Intra-articular injections of glucocorticoids showed superior short term results in objective shoulder scores, range of motion and patient satisfaction compared with a short course of oral corticosteroids.