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Is Suprascapular Nerve Block Better Than Intra-articular Corticosteroid Injection for the Treatment of Adhesive
Russel Haque1, Ranjit Kumar Baruah2, Abdul Bari3
1Macquarie University Hospital, Sydney, Australia.
Background:
Adhesive Capsulitis of shoulder (AdCS) is a treatment dilemma for surgeons. Intraarticular Corticosteroid Injection (IACI) has shown only short-term benefit in improving shoulder-related disability. Suprascapular nerve block (SSNB) has shown promise in trials in reducing chronic shoulder pain. Thus a RCT was conducted to compare the efficacy of SSNB versus IACI in the treatment of AdCS.
Material And Methods:
86 patients with AdCS were divided into SSNB and IACI groups by block randomization. SSNB group received single Suprascapular Nerve Block with 10ml of 0.5% Bupivacaine while IACI group received single injection of 40mg Triamcinolone and 1ml 2% Lignocaine in the shoulder; both followed by physiotherapy and followed-up and evaluated with SPADI and modified Constant scores at 1, 6 and 12 weeks.
Results:
Statistically significant improvements occurred in both groups. At 12 weeks, the SPADI and Con-stant score for SSNB improved to 9.62±10.07 and 36.95±3.43 respectively (p<0.001); and for IACI improved to 11.65±5.56 and 35.07±3.32 respectively (p <0.001). The difference in the scores between the 2 groups at 1st and 6th week was insignificant, but was statistically significant in favour of SSNB at 12 weeks (p=0.002).
Conclusions:
1. Thus, from the present study it can be concluded that both Suprascapular Nerve Block and Intra-articular Corticosteroid injection are effective mo-dalities of treatment for Adhesive Capsulitis of the shoulder. 2. Suprascapular Nerve Block increased patients' pain tolerability for effective mobilization, the effect be-ing persistent even at 12 weeks following injection. 3. It was safer than Intra-articular Corticosteroid in-jection with less incidence of adverse effects in our study and the literature. 4. It is an easy-to-perform outpatient procedure, with minimal chance of infection and other complications. 5. In light of the above, we may recommend Su-prascapular Nerve Block as the initial procedure of choice in patients with Adhesive Capsulitis of Shoulder.
